Causes and trends of under-five mortality in the Gilgel Gibe Health and Demographic Surveillance System, 2005 to 2019, Southwest Ethiopia: Cohort study - Desalegn Shiferaw; Mohammed Sanni Ali; Fasil Tessema; Bikila Regassa Feyisa; Mubarek Yesse Ashemo; Assefa Legesse Sisay; Muluemebet Abera; Tizta Tilahun Degfie; Esayas Alemayehu; Chaltu Fikru; Yohannes Kebede; Lelisa Sena Dadi (PLoS ONE, 2026)