http://hl7.org/fhir/StructureDefinition/openEHR-exposureDuration|4.0.1

{
  "description": "The amount of time the individual was exposed to the Substance.",
  "package": "hl7.fhir.r4.core@4.0.1",
  "date": "2014-10-09T00:00:00Z",
  "derivation": "constraint",
  "publisher": "Health Level Seven, Inc / openEHR project",
  "fhirVersion": "4.0.1",
  "name": "exposureDuration",
  "mapping": [ {
    "uri": "http://hl7.org/v3",
    "name": "RIM Mapping",
    "identity": "rim"
  } ],
  "abstract": false,
  "type": "Extension",
  "experimental": null,
  "resourceType": "StructureDefinition",
  "fhirversion": null,
  "title": null,
  "versionAlgorithmCoding": null,
  "extension": [ {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode": "pc"
  }, {
    "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
    "valueInteger": 1
  } ],
  "status": "draft",
  "id": "b6352eed-dfd8-5d7a-8419-99254d6faa45",
  "kind": "complex-type",
  "url": "http://hl7.org/fhir/StructureDefinition/openEHR-exposureDuration",
  "identifier": null,
  "context": [ {
    "type": "element",
    "expression": "AllergyIntolerance.reaction"
  } ],
  "versionAlgorithmString": null,
  "fhir_id": null,
  "version": "4.0.1",
  "contact": [ {
    "telecom": [ {
      "value": "http://hl7.org",
      "system": "url"
    } ]
  } ],
  "baseDefinition": "http://hl7.org/fhir/StructureDefinition/Extension"
}