Correlates of self-reported and biomarker based adherence to daily oral HIV pre-exposure prophylaxis among a cohort of predominantly men who have sex with men in Nigeria. oleh Olusegun A Adeyemi, Rebecca G Nowak, Mark Marzinke, Daniel Morgan, Nadia Sam-Agudu, Jaih Craddock, Min Zhan, Trevor A Crowell, Stefan Baral, Nicaise Ndembi, Sylvia Adebajo, Manhattan E Charurat, TRUST/RV368 Study Group