[1] Univ Calif Berkeley, Sch Publ Hlth, Berkeley, CA 94720 USA
[2] George Washington Univ, Sch Med & Hlth Sci, Washington, DC USA
[3] Northwestern Univ, Feinberg Sch Med, Chicago, IL USA
[4] Univ Calif San Francisco, Div Hlth & Med Sci, Joint Med Program, San Francisco, CA 94143 USA
[5] Univ Calif Berkeley, Berkeley, CA 94720 USA
[6] Stanford Univ, Med Ctr, Dept Obstet & Gynecol, Palo Alto, CA USA
[7] Univ Calif San Francisco, San Francisco Gen Hosp, Positive Hlth Program, San Francisco, CA 94143 USA
[8] Univ Calif San Francisco, Ctr AIDS Prevent Studies, San Francisco, CA 94143 USA
[9] Univ Calif Berkeley, Human Rights Ctr, Berkeley, CA 94720 USA
[10] Univ Minnesota, Sch Med, Dept Internal Med, Minneapolis, MN 55455 USA