Fixup: No reason get_or_create_patient shouldn't have a docstring

intrahospital_api/loader.py

@@ -445,6 +445,22 @@ def _load_patient(patient, patient_load):
 
 
 def get_or_create_patient(mrn, episode_category, run_async=None):
+    """
+    Given an MRN, either return a Patient alredy in elCID with that
+    identifier, or create a new patient.
+    
+    Creates an episode of EPISODE_CATEGORY for this patient if they
+    do not already have one.
+    
+    Like Django `.get_or_create` this function returns a tuple of 
+    (object, bool) where BOOL is whether or not this patient has 
+    been created, or already existed.
+    
+    As some MRNs are inactive but still exist within the system, it
+    is possible that this function returns a patient with a different
+    primary identifier (`Demographics.hospital_number`) to the value 
+    passed in as MRN.
+    """
     patient = Patient.objects.filter(
         demographics__hospital_number=mrn
     ).first()