Mendes A, Whiteman A, Nygren B, Kaplan B, Hussain I, Soofi S, Martinez M, Farag NH. Immunity to poliovirus in Afghanistan: A household sampling method for serological assessment based on geographical information systems. Geospat Health [Internet]. 2022 Nov. 29 [cited 2024 Nov. 24];17(2). Available from: https://www.geospatialhealth.net/gh/article/view/1107