Weiss WM, Burnham G, Winch PJ. Evaluating the Experience of GAPS—A Methodology for Improving Quality of Mass Immunization Campaigns in Developing Countries. J Health Popul Nutr [Internet]. 2009 Nov. 23 [cited 2025 Oct. 7];27(5):684-95. Available from: https://www.banglajol.info/index.php/JHPN/article/view/3780