Feasibility of recruiting high-risk women in the US for HIV vaccine efficacy trials (HVTN 906). - Koblin, B.; Metch, B.; Morgan, C.; Novak, R.; Swann, E.; Metzger, D.; Lucy, D.; Dunbar, D.; Graham, P.; Madenwald, T.; Escamia, G.; Frank, I. (Retrovirology, 2012)