Time‐varying age‐ and CD4‐stratified rates of mortality and WHO stage 3 and stage 4 events in children, adolescents and youth 0 to 24 years living with perinatally acquired HIV, before and after antiretroviral therapy initiation in the paediatric IeDEA Global Cohort Consortium - Desmonde, Sophie; Neilan, Anne M; Musick, Beverly; Patten, Gabriela; Chokephaibulkit, Kulkanya; Edmonds, Andrew; Duda, Stephany N; Malateste, Karen; Wools‐Kaloustian, Kara; Ciaranello, Andrea L; Davies, Mary‐Ann; Leroy, Valériane (Journal of the International AIDS Society, 2020)