Spatial analysis of unimproved drinking water source in East Africa: Using Demographic and Health Survey (DHS) data from 2012–2023 - Lidetu Demoze; Kassaw Chekole Adane; Jember Azanaw; Eyob Akalewold; Tenagne Enawugaw; Mitkie Tigabie; Amensisa Hailu Tesfaye; Gelila Yitageasu (PLoS ONE, 2025)