[1] Beth Israel Deaconess Med Ctr, New York, NY 10003 USA
[2] Univ Calif San Francisco, San Francisco Gen Hosp, Dept Psychiat, San Francisco, CA 94110 USA
[3] Ctr Drug Use & HIV Res, New York, NY 10003 USA
[4] Natl Dev & Res Inst Inc, New York, NY 10010 USA
[5] San Francisco AIDS Fdn, HIV Prevent Project, San Francisco, CA 94103 USA
[6] Mission Neighborhood Resource Ctr, San Francisco, CA 94110 USA
[7] BAART Programs, San Francisco, CA 94102 USA