Time to treatment failure and its predictors among children receiving first-line antiretroviral therapy in Tigray Region public general hospitals, North Ethiopia, 2024: Retrospective cohort study - Ainom Shimondi Shishay; Berhe Beyene Gebrezgiabher; Yohannes Kinfe Gebreyohannes; Birhane Mekonen Negash; Berhe Gebrehiwot Tewele; Efrem Shushay Berhe; Misho Mlaw Kidane; Tetemke Mekonen Tekea; Teklebrhan Kinfe Gebru (PLoS ONE, 2026)