Reaffirmation of HL7 Version 3 Standard: XML Implementation Technology Specification – Wire Format Compatible Release 1 Data Types, Release 1
ANSI/HL7 V3XMLITS WFCR1DT, R1-2014 (R2019) – see https://www.hl7.org/implement/standards/product_brief.cfm?product_id=357 for more information