HL7 CDA® R2 Implementation Guide: Quality Reporting Document Architecture (QRDA III), Release 1, STU Release 2.1
HL7 CDA® R2 Implementation Guide: Quality Reporting Document Architecture (QRDA III), Category III, Release 1
HL7 CDA® R2 Implementation Guide: Quality Reporting Document Architecture I (QRDA I) Release 1, STU Release 5.3
