hl7

{
  "resourceType": "ResearchElementDefinition",
  "id": "example",
  "text": {
    "status": "generated",
    "div": "<div xmlns=\"http://www.w3.org/1999/xhtml\">[Put rendering here]</div>"
  },
  "status": "draft",
  "type": "population",
  "characteristic": [
    {
      "definitionCodeableConcept": {
        "text": "Diabetic patients over 65"
      }
    }
  ]
}