{
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  "system" : "http://terminology.hl7.org/CodeSystem/v3-ObservationValue",
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    "valueBoolean" : true
  }, {
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    "code" : "status",
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  }, {
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    "code" : "internalId",
    "valueCode" : "21095"
  }, {
    "_uri" : "http://hl7.org/fhir/concept-properties#child",
    "code" : "child",
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    "valueCode" : "_ECGAnnotationValue"
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  "codesystem" : "def60ac4-7f58-5ca1-a546-505bdbdb22b6",
  "concept_id" : "40191954-2bb4-5370-a825-04918090f040",
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}