Mendes, Amalia, Ari Whiteman, Benjamin Nygren, Brian Kaplan, Imtiaz Hussain, Sajid Soofi, Maureen Martinez, and Noha H. Farag. “Immunity to Poliovirus in Afghanistan: A Household Sampling Method for Serological Assessment Based on Geographical Information Systems”. Geospatial Health 17, no. 2 (November 29, 2022). Accessed December 8, 2024. https://www.geospatialhealth.net/gh/article/view/1107.