HIV-1 drug resistance before initiation or re-initiation of first-line antiretroviral therapy in low-income and middle-income countries: a systematic review and meta-regression ana... by Gupta, RK, Gregson, J, Parkin, N, Haile-Selassie, H, Tanuri, A, Forero, L, Kaleebu, P, Watera, C, Aghokeng, A, Mutenda, N, Dzangare, J, Hone, S, Hang, ZZ, Garcia, J, Garcia, Z, Marchorro, P, Beteta, E, Giron, A, Hamers, R, Inzaule, S, Frenkel, LM, Chung, MH, de Oliveira, T, Pillay, D, Naidoo, K, Kharsany, A, Kugathasan, R, Cutino, T, Hunt, G, Rios, S, Doherty, M, Jordan, MR, Bertagnolio, S