DP2 v3.1

Changelog :
#-update of the Algorithm 2: Two non-specialist codes for ADHD that are at least 28 days apart

Instructions on how to run it and check the produced results are here:
https://github.com/IMI-ConcePTION/DP2_SSRI-SNRI/wiki/Instructions-to-run-the-script-and-check-results