HIV incidence and risk contributing factors among men who have sex with men in Benin: A prospective cohort study. oleh Septime P H Hessou, Yolaine Glele-Ahanhanzo, Rhéda Adekpedjou, Clement Ahoussinou, Codjo D Djade, Alphonse Biaou, Christian R Johnson, Michel Boko, Michel Alary