Immunity to poliovirus in Afghanistan: A household sampling method for serological assessment based on geographical information systems. Geospatial Health, [S. l.], v. 17, n. 2, 2022. DOI: 10.4081/gh.2022.1107. Disponível em: https://www.geospatialhealth.net/gh/article/view/1107. Acesso em: 26 jun. 2025.