<status value="active"/><experimental value="false"/><publisher value="HL7 International / FHIR Infrastructure"/><contact><telecom><system value="url"/><value value="http://www.hl7.org/Special/committees/fiwg"/></telecom></contact><description value="This value set defines the ISO 3166 Part 1 2-letter codes"/><compose><include><system value="urn:iso:std:iso:3166"/><filter><property value="code"/><op value="regex"/><value value="[A-Z]{2}"/></filter></include></compose></ValueSet>

Include codes from urn:iso:std:iso:3166 where code matches (by regex) [A-Z]{2}