High interest in preexposure prophylaxis among men who have sex with men at risk for HIV infection: baseline data from the US PrEP demonstration project.

Cohen SE, Vittinghoff E, Bacon O, Doblecki-Lewis S, Postle BS, Feaster DJ, Matheson T, Trainor N, Blue RW, Estrada Y, Coleman ME, Elion R, Castro JG, Chege W, Philip SS, Buchbinder S, Kolber MA, Liu AY