Preventing Premature Pre-Exposure Prophylaxis Discontinuation and Sexually Transmitted Infections Among Men Who Have Sex With Men (Project PEACH): Protocol for a Prospective Cohort Study - Amalia Aldredge; Derrius Carter; Candice A DeCree; Elliot V Gardner; Gina Bailey Herring; Oumaima Kaabi; Rebecca Moges-Banks; Rachel Valencia; Colleen Frances Kelley; Patrick Sean Sullivan (JMIR Research Protocols)