This is the CodeSystem that contains codes in both ClinicalTrials.gov (http://clinicaltrials.gov) and ClinicalTrials.gov (http://clinicaltrials.gov).
Generated Narrative: CodeSystem 21d0d52d-6932-4516-ad29-944d62abcb69-120
This code system http://hl7.org/fhir/comparison/CodeSystem/21d0d52d-6932-4516-ad29-944d62abcb69-120 defines codes, but no codes are represented here
http://hl7.org/fhir/comparison/CodeSystem/21d0d52d-6932-4516-ad29-944d62abcb69-120