{
  "package" : "hl7.terminology.r5@6.3.0",
  "definition" : "observational study comparing cohorts.",
  "system" : "http://terminology.hl7.org/CodeSystem/study-type",
  "property" : [ ],
  "codesystem" : "6d5fe883-1d4b-5ea6-8935-4a55d22c522d",
  "concept_id" : "7bd6ebf7-49ca-52bb-a372-fbd726cb5002",
  "ancestors" : {
    "cohort" : 0
  },
  "id" : "c518cb79-87fd-4888-99f8-510ce8b4722d",
  "code" : "cohort",
  "display" : "comparative cohort study",
  "version" : "1.0.0"
}