DK Smith, M.D.; Kevin A. Fenton, M.D., Ph.D.; Michael C. Thigpen, M.D.; Steven R. Nesheim, M.D.
In the United States, an estimated 48,100 new human immunodeficiency virus (HIV) infections occurred in 2009.1 Of these, 27% were in heterosexual men and women who did not inject drugs, and 64% were in men who have sex with men (MSM), including 3% in...