This is the CodeSystem that contains all the codes in ResearchStudyReasonStopped (http://terminology.hl7.org/CodeSystem/research-study-reason-stopped) and ResearchStudyReasonStopped (http://terminology.hl7.org/CodeSystem/research-study-reason-stopped). E.g. what you have to deal with if you get resources containing codes in either of them
Generated Narrative: CodeSystem 5127f8b7-6ff3-42d1-85bd-471f7469a43a-1523
This code system http://hl7.org/fhir/comparison/CodeSystem/5127f8b7-6ff3-42d1-85bd-471f7469a43a-1523
defines codes, but no codes are represented here