<status value="active" /> <experimental value="false" /> <date value="2019-11-01T09:29:23+11:00" /> <publisher value="HL7 (FHIR Project)" /> <contact> <telecom> <system value="url" /> <value value="http://hl7.org/fhir" /> </telecom> <telecom> <system value="email" /> <value value="fhir@lists.hl7.org" /> </telecom> </contact> <description value="A list of the base types defined by this version of the FHIR specification - types that are defined, but for which only specializations actually are created." /> <immutable value="true" /> <compose> <include> <system value="http://hl7.org/fhir/abstract-types" /> </include> </compose> </ValueSet>