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{
  "resourceType": "Consent",
  "status": "active", //active | inactive
  "scope": {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/consentscope",
        "code": "patient-privacy"
      }
    ]
  },
  "category": [
    {
      "coding": [
        {
          "system": "http://loinc.org",
          "code": "59284-0"
        }
      ]
    }
  ],
  "patient": {
    "reference": "Patient/f001",
  },
  "performer":{
    "reference": "Patient/f001",
  },
  "dateTime": "2016-05-11",
  "organization": {
      "reference": "Organization/f001"
    },
  "language": "en",
  "sourceReference":{
	  // TODO
  },
  // Either a Policy or PolicyRule	policy.exists() or policyRule.exists()
  "policyRule": {
    "coding": [
      {
        "system": "http://terminology.hl7.org/CodeSystem/v3-ActCode",
        "code": "OPTIN"
      }
    ]
  }, 
  "provision": {
    "period": {
      "start": "1964-01-01",
      "end": "2016-01-01" //when person opt-outs
    }
  }
}