{
  "package" : "hl7.fhir.r5.core@5.0.0",
  "definition" : "A crossover cohort design in which two or more cohorts have different orders of exposures.",
  "system" : "http://hl7.org/fhir/study-design",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "SEVCO:01012"
  } ],
  "codesystem" : "bb32c5f8-166a-5db4-919c-9554be080f5c",
  "concept_id" : "17bfb58d-e058-57b7-a01d-86d6b6d06b84",
  "ancestors" : {
    "SEVCO:01010" : 2,
    "SEVCO:01012" : 1,
    "SEVCO:01024" : 0
  },
  "id" : "21504a60-7585-4396-8a2b-51eb9af7fb4b",
  "code" : "SEVCO:01024",
  "display" : "Controlled crossover cohort design",
  "version" : "5.0.0"
}