Parametric modeling of under-5 children survival among 30 African countries: Lognormal accelerated failure time gamma shared frailty model - Bikis liyew; Kemal Tesfa; Kassaye Demeke Altaye; Abeje Diress Gelaw; Alemu Teshale Bicha; Ayanaw Guade Mamo; Kassaw Chekole Adane (PLoS ONE, 2025)