Citation: Grov C, Westmoreland DA, Carneiro PB, Stief M, MacCrate C, Mirzayi C, Pantalone DW, Patel VV, Nash D. Recruiting vulnerable populations to participate in HIV prevention research: Findings from the Together 5000 cohort study. Ann Epidemiol. 2019 Jul;35:4-11. doi: 10.1016/j.annepidem.2019.05.003. Epub 2019 May 16.