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Change in mean body weight of the human immunodeficiency virus positive patients treated with second line antiretroviral therapy (n = 126) V= Regimen V [zidovudine (ZDV) + lamivudine (3TC) + tenofovir (TDF) + boosted lopinavir (LPV/r)] Va= Regimen Va [3TC + TDF + LPV/r]
