Celum C, Hosek S, Tsholwana M, Kassim S, et al. PrEP uptake, persistence, adherence, and effect of retrospective drug level
feedback on PrEP adherence among young women in southern Africa: Results from
HPTN 082, a randomized controlled trial. PLoS Med 2021;18:e1003670.
PMID: 34143779