{
  "package" : "hl7.fhir.r5.core@5.0.0",
  "definition" : "The study prematurely ended due to toxicity.",
  "system" : "http://hl7.org/fhir/research-study-reason-stopped",
  "property" : [ ],
  "codesystem" : "00a81642-d91c-5728-bafc-d17ab13ac27e",
  "concept_id" : "8f2f5841-4c99-59a9-bf9c-6b184804fde0",
  "ancestors" : {
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  },
  "id" : "2fb2b3be-7a7d-48a2-90fa-289284b58543",
  "code" : "closed-due-to-toxicity",
  "display" : "Closed due to toxicity",
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}