{
  "resourceType": "StructureDefinition",
  "meta": {
    "lastUpdated": "2018-09-29T16:12:56.185+00:00"
  },
  "url": "http://example.org/fhir/StructureDefinition/TestTCBResearch",
  "name": "TestTCBResearch",
  "status": "draft",
  "date": "2018-09-29T16:12:55.9767217+00:00",
  "fhirVersion": "3.0.1",
  "kind": "resource",
  "abstract": false,
  "type": "ResearchStudy",
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/ResearchStudy",
  "derivation": "constraint",
  "differential": {
    "element": [
      {
        "id": "ResearchStudy.period",
        "path": "ResearchStudy.period",
        "min": 1
      },
      {
        "id": "ResearchStudy.period.start",
        "path": "ResearchStudy.period.start",
        "min": 1
      },
      {
        "id": "ResearchStudy.period.end",
        "path": "ResearchStudy.period.end",
        "min": 1
      }
    ]
  }
}