{
  "package" : "hl7.terminology.r4@6.3.0",
  "definition" : "observational study comparing cohorts.",
  "system" : "http://terminology.hl7.org/CodeSystem/study-type",
  "property" : [ ],
  "codesystem" : "8bf52a19-1286-5616-9439-dbee63d054bc",
  "concept_id" : "7bd6ebf7-49ca-52bb-a372-fbd726cb5002",
  "ancestors" : {
    "cohort" : 0
  },
  "id" : "82dffb6c-49f8-4411-94be-b1436b68a7f5",
  "code" : "cohort",
  "display" : "comparative cohort study",
  "version" : "1.0.0"
}