<status value="draft" /> <publisher value="eHealth4U" /> <contact> <name value="eHealth Lab (University of Cyprus)" /> <telecom> <system value="email" /> <value value="ehealthl@ucy.ac.cy" /> <use value="work" /> </telecom> </contact> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Observation" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://example.org/fhir/StructureDefinition/cyehr-sd-medicalhistorysource-r4" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <type> <code value="string" /> </type> </element> </differential> </StructureDefinition>