CDA STU Update Publication of HL7 CDA® R2 Implementation Guide: National Health Care Surveys (NHCS), Release 1, STU Release 2.1 and STU Release 3.1 – US Realm May 27, 2022 Lynn Laakso Public Health, STU, US Realm Learn more at https://www.hl7.org/implement/standards/product_brief.cfm?product_id=385
