Patients primarily attributed to Practitioner 123 (id = "example-patientlist")

<?xml version="1.0" encoding="UTF-8"?>

<Group xmlns="http://hl7.org/fhir">
  <id value="example-patientlist"/> 
  <text> 
    <status value="additional"/> <div xmlns="http://www.w3.org/1999/xhtml">
      <p> All patients primarily attributed to Practitioner 123</p> 
    </div> 
  </text> 
  <type value="person"/> 
  <membership value="enumerated"/> 
  <characteristic> 
    <code> 
      <coding> 
        <system value="http://example.org"/> 
        <code value="attributed-to"/> 
      </coding> 
      <text value="Patients primarily attributed to"/> 
    </code> 
    <valueReference> 
      <reference value="Practitioner/123"/> 
    </valueReference> 
    <exclude value="false"/> 
  </characteristic> 
</Group>