006580000a22002170004500 PH-MaWHO 20241108112407.0 World Health Organization. Department of Vaccines and Biologicals. 650451 The immunization data quality audit (DQA) procedure. WHO/V&B/03.19 Geneva : World Health Organization, 2003. 93p. WHO Documents File eng EPI Vaccines 354689 Reference standards 299952 Research design 301006 http://whqlibdoc.who.int/hq/2003/WHO_V&B_03.19.pdf DOC 9266 9266 0 0 0 0 WPRO WPRO 2021-05-23 0 WHO Documents File 09266 2024-01-24 00:00:00 2021-05-23 DOC