We found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleChanges in prevalence of HIV infection and sexual risk behavior in men who have sex with men in San Francisco: 1997 2002.AuthorsOsmond DH; Pollack LM; Paul JP; Catania JAPublicationAmerican Journal of Public Health, 2007, Vol 97, Issue 9, p1677ISSN0090-0036Publication typearticleDOI10.2105/AJPH.2005.062851