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Kaplan-Meier plot of the cumulative probability of virological suppression since antiretroviral therapy start; stratified by class of pretreatment drug resistance at the 20% (A) and 5% (B) detection thresholds. Abbreviations: ART, antiretroviral therapy; DRM, drug-resistance mutation; NRTI, nucleoside reverse transcriptase inhibitor; NNRTI, nonnucleoside reverse transcriptase inhibitor; PDR, pretreatment drug resistance; VL, viral load; VS, virological suppression.
