scraper.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "import re\n",
    "import pandas\n",
    "import random\n",
    "import collections\n",
    "import time\n",
    "import csv\n",
    "\n",
    "import requests\n",
    "import bs4\n",
    "import rpy2.interactive.packages"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "text/plain": [
       "rpy2.robjects.packages.Package as a <module 'rvest'>"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "# load R and rvest package for webscraping\n",
    "# bs4 (beautiful soup) had trouble with the CSS selector\n",
    "%load_ext rpy2.ipython\n",
    "rpy2.interactive.packages.importr('rvest')"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": [
    "def get_dates(doi):\n",
    "    \"\"\"\n",
    "    Get the receival, acceptance, publication dates for a PLOS doi by scraping the PLOS website.\n",
    "    \"\"\"\n",
    "    base_url = 'http://dx.doi.org/'\n",
    "    url = base_url + doi\n",
    "    r_out = %R -i url url %>% rvest::html() %>% rvest::html_node('.articleinfo p:nth-child(3)') %>% rvest::html_text()\n",
    "    received, accepted, published = r_out[0].split('; ')\n",
    "    received, accepted, published = [str(pandas.to_datetime(x.split(':')[1].strip()).date()) for x in [received, accepted, published]]\n",
    "    return {'doi': doi, 'received': received, 'accepted': accepted, 'published': published}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "# Read the tsv of pubmed-retreived PLOS publications\n",
    "pubmed_df = pandas.read_table('data/pubmed-plos.tsv.gz', compression='gzip')\n",
    "pubmed_df = pubmed_df.dropna(subset=['doi'])\n",
    "publication_types = collections.Counter(pubmed_df.pubtype)\n",
    "pubmed_df = pubmed_df[pubmed_df.pubtype == 'Journal Article']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {
    "collapsed": false
   },
   "outputs": [],
   "source": [
    "def shuffle_and_head(df, k):\n",
    "    \"\"\"Shuffle a dataframe and return its first k lines.\"\"\"\n",
    "    return df.ix[random.sample(list(df.index), k)]\n",
    "\n",
    "# Select 1000 random publications for each journal\n",
    "random.seed(0)\n",
    "subset_df = pubmed_df.groupby('journal').apply(shuffle_and_head, k=1000)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "10.1371/journal.pmed.0010016 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060299 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060086 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010003 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1002451 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060130 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030126 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050312 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050257 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001222 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1003897 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001704 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020380 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001436 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040251 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004146 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004806 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050209 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050120 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000034 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000126 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050070 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020140 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020197 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001339"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "/home/dhimmels/anaconda3/lib/python3.4/site-packages/rpy2/robjects/functions.py:106: UserWarning: Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "\n",
      "  res = super(Function, self).__call__(*new_args, **new_kwargs)\n",
      "/home/dhimmels/anaconda3/lib/python3.4/site-packages/rpy2/robjects/functions.py:106: UserWarning: Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'medicine.plosjournals.org'\n",
      "\n",
      "  res = super(Function, self).__call__(*new_args, **new_kwargs)\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      " need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'medicine.plosjournals.org'\n",
      "10.1371/journal.pmed.1000048 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1002779 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030104 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050062 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001779 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060206 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050213 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020227 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1003788 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050229 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020322 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020302 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020169 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040380 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001185 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050081 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040331 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020035 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030141 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003084 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002191 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030010 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060276 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000115 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030312 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040142 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001550 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060306 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000219 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001658 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050334 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030368 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001114 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020010 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060076 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001991 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000293 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1002775 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002407 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020178 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040395 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030257 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001426 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002244 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050132 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1002808 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040180 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040368 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.0020001 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040416 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020179 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001016 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000001 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050163 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010017 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060195 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001253 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060252 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020063 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040063 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020004 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003022 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000099 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000111 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030128 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1000973 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040071 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.0030016 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050331 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040423 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001754 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003571 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020306 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1000246 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1003223 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030029 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000548 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030106 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040233 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030387 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060215 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060032 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001831 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001321 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000069 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060047 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030422 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1004012 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000165 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060042 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001264 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001821 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002238 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040005 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000275 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000376 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000292 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001793 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040216 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000504 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040134 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0001324 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040340 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060143 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000294 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003259 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1003355 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000245 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050246 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040241 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000898 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001319 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020163 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020104 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1000809 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030359 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002086 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000186 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003019 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020072 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030170 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000146 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001010 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001354 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000057 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001174 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010055 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1003326 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004108 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050071 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000039 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060028 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003413 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001434 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040011 need more than 1 value to unpack\n",
      "10.1371/journal.pone.0123845 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001046 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030064 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060210 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001248 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003509 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020214 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001187 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020138 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001149 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000378 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000551 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001491 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001124 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030217 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001063 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050204 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030024 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000138 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030435 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030088 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002148 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030234 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060043 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020052 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050183 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050017 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020400 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1000528 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001455 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000299 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003372 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001560 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003021 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001811 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001924 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002918 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040001 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020141 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000005 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040027 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010037 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020334 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000318 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030076 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060224 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000101 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000405 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020060 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001834 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001371 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000069 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040120 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000041 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000263 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001291 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001072 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030132 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030209 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001392 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060266 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000477 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030137 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030020 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020366 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000190 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030453 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050234 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050156 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000096 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1004030 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040302 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000619 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000105 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001312 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040252 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002710 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001035 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040271 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001232 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002145 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001687 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002446 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030233 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020224 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050022 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000448 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040374 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040229 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030473 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001001 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050095 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050283 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020217 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030416 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050198 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001139 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001040 need more than 1 value to unpack\n",
      "10.1371/journal.pone.0126697 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000009 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001632 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040031 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001468 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050012 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1001190 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060255 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020365 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030050 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050252 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030304 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040051 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001096 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040382 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000035 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1002037 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030296 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001671 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030009 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050333 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0001950 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.0020090 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050250 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010043 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040170 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020033 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030423 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000205 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001486 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060307 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030351 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050229 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040029 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001783 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050232 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1001253 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001037 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001397 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030082 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020042 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000255 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030238 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000501 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060138 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003349 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060230 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050301 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020369 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000037 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040080 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001639 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050169 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040277 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050176 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050186 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002151 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030339 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1003096 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001927 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040075 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040293 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000039 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020364 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050058 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.0010024 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1000136 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020212 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020120 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030180 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030262 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050230 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1002878 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030036 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020356 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040362 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001031 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001190 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030236 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000831 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030034 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040290 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060173 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020233 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040092 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001476 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060239 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000071 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020266 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050102 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040332 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040113 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002126 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001325 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001643 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040036 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050278 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001813 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001244 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020197 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040185 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050142 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001219 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001186 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1003468 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020116 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001344 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000310 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001073 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003223 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000485 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001115 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000578 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000259 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040334 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000177 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040299 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1002808 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030266 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000062 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002118 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001516 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060247 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001289 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040111 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050143 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001021 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004254 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000042 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000487 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030297 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060008 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001756 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001049 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000075 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020005 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020025 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060052 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001405 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003105 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020330 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000276 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001005 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040363 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1003080 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050134 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000290 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020145 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030382 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040330 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030011 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001839 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1000786 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020267 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001919 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020139 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020384 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001220 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1004208 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050201 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000247 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003508 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020092 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050190 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030109 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001322 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001239 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040128 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040110 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001567 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003008 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001824 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001453 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000939 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020109 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020079 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002352 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001812 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030274 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020041 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040071 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040261 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001279 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1001105 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000823 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000087 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002916 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001655 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001562 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020378 need more than 1 value to unpack\n",
      "10.1371/annotation/4ca315e7-1219-46fd-af5c-c29b8e6ecf93 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Recv failure: Connection reset by peer\n",
      "10.1371/journal.pbio.0060074 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000373 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001939 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020154 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001740 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1001008 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001540 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000030 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001284 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020102 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030218 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1002166 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010014 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000359 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020106 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000247 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040303 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000421 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020048 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030193 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020210 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060160 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030113 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000322 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060207 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004546 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002047 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060259 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000323 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060209 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1002652 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040440 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001941 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030220 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000224 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020355 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1000452 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000532 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020401 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050328 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000438 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000108 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040073 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001544 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000318 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000217 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020291 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001332 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060029 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040127 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000097 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.0030105 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050219 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020107 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060033 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060309 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000106 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020412 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000056 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030228 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040045 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000417 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001522 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001615 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030219 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001323 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000295 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040333 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020045 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020004 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030225 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050078 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1002803 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020113 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001580 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003983 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001656 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000196 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000429 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001077 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1003510 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1000563 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003507 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020286 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000094 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040209 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060280 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1003089 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000014 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000015 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040094 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030293 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060263 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1005179 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030159 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060296 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000343 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1002535 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030144 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020318 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060149 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001922 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030345 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060301 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001294 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000131 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050236 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040369 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001742 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050337 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060264 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030134 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000193 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030129 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020176 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030274 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030108 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1004045 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1001077 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020071 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050335 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020391 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010038 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050068 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020432 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030043 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001008 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020261 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1005192 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000319 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050072 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060118 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1003447 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060272 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1003537 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000045 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040028 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000020 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000279 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040325 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000274 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030476 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030123 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030530 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000142 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050103 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050227 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001328 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001878 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020075 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000226 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040159 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003892 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060167 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060152 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020418 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020351 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000274 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001769 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000055 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030194 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001767 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002531 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050180 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002868 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001825 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003143 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060105 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050064 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040197 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030003 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1000385 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030044 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001337 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050275 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000028 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040119 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002182 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040104 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030039 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060166 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1002820 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1004952 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020277 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001382 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002499 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060016 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001310 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002106 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000063 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1003041 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000295 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060287 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040035 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050210 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040352 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000001 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040158 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003285 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001906 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000213 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000214 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050029 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020128 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000268 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001201 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050079 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060194 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001210 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030302 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000266 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050297 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1002669 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000223 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040267 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040291 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1002894 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050269 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020142 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050002 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000077 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040003 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001191 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020285 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003134 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000472 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050189 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050224 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010040 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1005254 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040379 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010005 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000389 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002021 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001501 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001612 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004805 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002162 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000068 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001623 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001929 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050294 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1002543 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003400 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000302 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030008 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050158 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060262 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004437 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001730 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050308 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002125 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050081 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040326 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040006 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020228 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004397 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060011 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001508 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000087 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003350 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002159 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050231 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020262 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001996 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030095 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050202 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050250 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020111 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060253 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040321 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001850 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060219 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030077 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000002 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040254 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030405 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003505 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001188 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1000471 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004329 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030384 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001126 need more than 2 values to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040235 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060009 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000240 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001429 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002019 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001216 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050023 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000369 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000118 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020276 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020321 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030146 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001767 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002462 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040026 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010015 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040315 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030343 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003017 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020196 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001603 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004409 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002179 need more than 1 value to unpack\n",
      "10.1371/journal.pone.0100463 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000038 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060191 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001199 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000464 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040069 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040083 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001842 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030181 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000069 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000182 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001118 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050121 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040383 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000095 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040067 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003365 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030096 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.0020112 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000219 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050092 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020049 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001446 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001404 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000080 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000447 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000625 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040163 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000018 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030316 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001129 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000044 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001503 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020098 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040078 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004506 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000155 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060128 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000162 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040349 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020009 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004246 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020129 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040179 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020368 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030183 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003657 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1004143 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020248 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050053 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040376 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001317 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000137 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040381 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060260 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030006 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004714 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001205 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040135 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030001 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050090 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060208 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030002 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040219 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001296 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050254 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030323 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000363 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050192 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020097 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001467 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1000134 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020247 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030299 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000073 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030242 'NoneType' object is not subscriptable\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "/home/dhimmels/anaconda3/lib/python3.4/site-packages/rpy2/robjects/functions.py:106: UserWarning: Error in function (type, msg, asError = TRUE)  : \n",
      "  Recv failure: Connection reset by peer\n",
      "\n",
      "  res = super(Function, self).__call__(*new_args, **new_kwargs)\n",
      "/home/dhimmels/anaconda3/lib/python3.4/site-packages/rpy2/robjects/functions.py:106: UserWarning: Error in parse.response(r, parser, encoding = encoding) : \n",
      "  client error: (404) Not Found\n",
      "\n",
      "  res = super(Function, self).__call__(*new_args, **new_kwargs)\n"
     ]
    },
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050251 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in parse.response(r, parser, encoding = encoding) : \n",
      "  client error: (404) Not Found\n",
      "10.1371/journal.pone.0002957 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020068 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001544 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060014 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050340 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020259 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030129 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001554 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020302 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010042 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000010 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020362 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050243 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030235 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000133 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000002 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050324 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030053 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003972 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000128 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030371 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040103 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003734 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002044 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002445 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040413 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050145 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040188 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003496 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060183 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050043 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000075 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000091 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000371 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001800 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030415 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060289 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000411 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001646 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001642 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050006 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030482 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1002269 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020393 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001716 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002134 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050124 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010051 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050138 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050318 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020279 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050063 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1003154 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020148 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001079 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040050 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001285 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030222 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001089 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020046 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020422 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030514 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001054 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.0020126 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050214 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060229 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020336 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050101 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001324 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050110 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001877 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030193 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000022 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000840 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020289 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000074 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040210 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1002060 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060017 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020065 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001745 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060204 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030208 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060198 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003542 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000374 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040027 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060184 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0000428 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001153 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001825 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1002081 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020352 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001448 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000156 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001756 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040113 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040360 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020245 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050046 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004678 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.0020072 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001552 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001741 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003676 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000114 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060068 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020143 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001973 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020160 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1003873 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060203 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030326 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000029 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030143 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030005 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000082 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003020 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001463 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010059 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000095 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000022 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0001007 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050113 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000060 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020403 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010006 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000105 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030381 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040097 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020260 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000092 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020317 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050215 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020174 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030300 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020303 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050023 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0002912 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000410 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001088 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030398 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050159 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040052 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040009 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1002074 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020110 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020200 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1000258 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050063 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003516 need more than 1 value to unpack\n",
      "\n",
      "Error in xml_apply(x, XML::xmlValue, ..., .type = character(1)) : \n",
      "  Unknown input of class: NULL\n",
      "10.1371/journal.pntd.0000569 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060292 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060251 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000071 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1000724 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060300 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000013 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001078 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020122 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001971 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060265 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020177 need more than 1 value to unpack\n",
      "10.1371/annotation/a4b94e99-6f8a-433e-9a13-17a9f206eb68 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030328 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1000906 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004484 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001519 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001178 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030136 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050001 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030299 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001357 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020008 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060135 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020439 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000072 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060174 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1002165 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020015 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001590 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050233 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001413 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001218 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060107 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020062 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050022 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060182 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060061 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020100 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030314 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030151 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040066 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000088 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030267 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010007 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000083 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050248 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020358 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001309 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002858 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040430 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060188 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001087 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004179 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020286 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001070 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040232 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001805 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050192 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004624 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030102 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001814 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020039 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050201 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000032 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060308 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001038 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040372 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1004015 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040074 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060002 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001769 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004182 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1001122 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000293 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060316 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030078 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001159 need more than 1 value to unpack\n",
      "10.1371/journal.pone.0127082 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003288 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030156 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0020399 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040268 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020014 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050223 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040090 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001030 need more than 2 values to unpack\n",
      "10.1371/journal.pcbi.1000040 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001650 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001146 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004791 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030177 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1000217 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001105 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050202 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001821 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030091 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000043 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030041 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060022 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050129 'NoneType' object is not subscriptable\n",
      "10.1371/journal.ppat.1003034 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020108 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000089 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.0010076 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030145 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pbio.1001882 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050252 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060050 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0001749 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060024 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0030157 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pntd.0003132 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040332 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001802 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000404 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060214 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0030008 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040127 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.1001247 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000400 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050144 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060278 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050150 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030309 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000330 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001359 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050235 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0010009 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0060085 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pgen.1000540 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001654 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003012 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0000008 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0050004 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040256 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050016 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020011 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003219 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0050299 'NoneType' object is not subscriptable\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.0040082 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0040265 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050177 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000085 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pcbi.1003896 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000088 need more than 1 value to unpack\n",
      "\n",
      "Error in function (type, msg, asError = TRUE)  : \n",
      "  Couldn't resolve host 'biology.plosjournals.org'\n",
      "10.1371/journal.pbio.1000061 'NoneType' object is not subscriptable\n",
      "10.1371/journal.pmed.0020243 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1003955 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000306 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030076 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0000071 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001315 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020301 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030094 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001056 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0030207 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030198 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001215 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001086 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002620 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0040086 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001699 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002864 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001530 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000106 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001512 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000335 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1000398 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0040292 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030537 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050149 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050212 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001581 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030041 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1002154 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002747 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.0020062 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0060211 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001827 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000355 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010035 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001548 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1002519 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000230 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001427 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001447 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000094 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030016 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.0030019 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001161 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020001 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020337 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000158 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001947 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030339 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001108 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001431 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0040279 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000231 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0003382 need more than 1 value to unpack\n",
      "10.1371/journal.pgen.1004179 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0050074 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0010034 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020131 need more than 1 value to unpack\n",
      "10.1371/journal.pcbi.1000482 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020207 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.0010021 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1000103 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1004568 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001333 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001306 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030231 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001616 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020209 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020185 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0002092 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1000242 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0030355 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001529 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001546 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020067 need more than 1 value to unpack\n",
      "10.1371/journal.ppat.1003756 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0001751 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0020121 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001863 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0050139 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0030240 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0050032 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0060216 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1001775 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000086 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.1001297 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000143 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000208 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000141 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020178 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.1000367 need more than 1 value to unpack\n",
      "10.1371/journal.pmed.0020214 need more than 1 value to unpack\n",
      "10.1371/journal.pbio.0020267 need more than 1 value to unpack\n",
      "10.1371/journal.pntd.0000333 need more than 1 value to unpack\n"
     ]
    },
    {
     "name": "stderr",
     "output_type": "stream",
     "text": [
      "/home/dhimmels/anaconda3/lib/python3.4/site-packages/rpy2/robjects/functions.py:106: UserWarning: Error in xml_apply(x, XML::xmlValue, ..., .type = character(1)) : \n",
      "  Unknown input of class: NULL\n",
      "\n",
      "  res = super(Function, self).__call__(*new_args, **new_kwargs)\n"
     ]
    }
   ],
   "source": [
    "# Scrape PLOS articles and save to a tsv\n",
    "write_file = open('data/scraped-plos.tsv', 'w')\n",
    "writer = csv.DictWriter(write_file,  delimiter='\\t', fieldnames=['doi', 'received', 'accepted', 'published'])\n",
    "writer.writeheader()\n",
    "dois = list(subset_df.doi)\n",
    "random.shuffle(dois)\n",
    "for doi in dois:\n",
    "    try:\n",
    "        dates = get_dates(doi)\n",
    "        writer.writerow(dates)\n",
    "    except Exception as error:\n",
    "        print(doi, error)\n",
    "        pass\n",
    "    time.sleep(11)\n",
    "write_file.close()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Python 3",
   "language": "python",
   "name": "python3"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "ipython",
    "version": 3
   },
   "file_extension": ".py",
   "mimetype": "text/x-python",
   "name": "python",
   "nbconvert_exporter": "python",
   "pygments_lexer": "ipython3",
   "version": "3.4.3"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 0
}