updates

gdcdictionary/schemas/subject.yaml

@@ -41,9 +41,9 @@ properties:
 
   $ref: "_definitions.yaml#/ubiquitous_properties"
 
-#   PatientID: # use subject.submitter_id
-#     description: (0010,0020) A unique identifier for the patient.
-#     type: string
+  subject_id:
+    description: (0010,0020) A unique identifier for the patient.
+    type: string
 
   age_at_index:
     description: The study participant's age, in years, at the index event. The index event is determined by the data submitter and used as an anchor date for all temporal variables. Note that an age of 0 indicates a participant who is younger than 1 year old. For participants with ages greater than 89 years, please use the property 'age_at_index_gt89'.