Virological response and resistance among HIV-infected children receiving long-term antiretroviral therapy without virological monitoring in Uganda and Zimbabwe: Observational anal... by Szubert, A, Prendergast, A, Spyer, M, Musiime, V, Musoke, P, Bwakura-Dangarembizi, M, Nahirya-Ntege, P, Thomason, M, Ndashimye, E, Nankya, I, Senfuma, O, Mudenge, B, Klein, N, Gibb, D, Walker, A