{
  "resourceType": "Questionnaire",
  "status": "active",
  "item": [
    {
      "linkId": "demo",
      "text": "Patient Demographics",
      "type": "group",
      "item": [
        {
          "linkId": "demo-first-name",
          "text": "First name",
          "type": "string",
          "required": true
        },
        {
          "linkId": "demo-last-name",
          "text": "Last name",
          "type": "string",
          "required": true
        },
        {
          "linkId": "demo-birth-date",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "21112-8"
            }
          ],
          "text": "Date of birth",
          "type": "date",
          "required": true
        },
        {
          "linkId": "demo-sex",
          "code": [
            {
              "system": "http://loinc.org",
              "code": "76689-9"
            }
          ],
          "text": "Sex assigned at birth",
          "type": "choice",
          "extension": [
            {
              "url": "http://hl7.org/fhir/StructureDefinition/questionnaire-itemControl",
              "valueCodeableConcept": {
                "coding": [
                  {
                    "system": "http://hl7.org/fhir/questionnaire-item-control",
                    "code": "radio-button"
                  }
                ]
              }
            }
          ],
          "answerOption": [
            {
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA3-6",
                "display": "Female"
              }
            },
            {
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA2-8",
                "display": "Male"
              }
            },
            {
              "valueCoding": {
                "system": "http://loinc.org",
                "code": "LA4489-6",
                "display": "Unknown"
              }
            }
          ]
        },
        {
          "linkId": "demo-phone",
          "text": "Phone number",
          "type": "string"
        },
        {
          "linkId": "demo-email",
          "text": "Email address",
          "type": "string"
        },
        {
          "linkId": "demo-address",
          "text": "Home address",
          "type": "text"
        }
      ]
    }
  ]
}