Prevention with HIV-seropositive men who have sex with men: lessons from the Seropositive Urban Men's Study (SUMS) and the Seropositive Urban Men's Intervention Trial (SUMIT).
Wolitski RJ, Parsons JT, G?mez CA. Prevention with HIV-seropositive men who have sex with men: lessons from the Seropositive Urban Men's Study (SUMS) and the Seropositive Urban Men's Intervention Trial (SUMIT). J Acquir Immune Defic Syndr. 2004 Oct 01; 37 Suppl 2:S101-9.