<?xml version=“1.0” encoding=“UTF-8”?> <Observation xmlns=“hl7.org/fhir”>

      <id value="example-genetics-5"/>

      <!--   replaced the .related type sequel to with an extension   -->

      <meta>
  <security>
    <system value="http://terminology.hl7.org/CodeSystem/v3-ActReason"/>
    <code value="HTEST"/>
    <display value="test health data"/>
  </security>
</meta>
<extension url="http://hl7.org/fhir/StructureDefinition/observation-sequelTo">
              <valueReference>
                      <reference value="Observation/example-genetics-1"/>
                      <display value="ObservationForGenetics profile example 1"/>
              </valueReference>
      </extension>
      <!--  
      <related>
              <type value="sequel-to"/>
              <target>
                      <reference value="Observation/example-genetics-1"/>
                      <display value="ObservationForGenetics profile example 1"/>
              </target>
      </related>
-->
      <status value="final"/>
      <code>
              <text value="PCR validation"/>
      </code>
      <subject>
              <reference value="Patient/example"/>
              <display value="Molecular Lab Patient ID: HOSP-23456"/>
      </subject>
      <issued value="2013-04-03T15:30:10+01:00"/>
      <performer>
              <reference value="Practitioner/example"/>
              <display value="Sequence Analysis Laboratory"/>
      </performer>
      <valueCodeableConcept>
              <coding>
                      <system value="http://snomed.info/sct"/>
                      <code value="260385009"/>
                      <display value="Negative"/>
              </coding>
      </valueCodeableConcept>

</Observation>