[1] Harvard Univ, Sch Publ Hlth, Dept Global Hlth & Populat, Boston, MA 02115 USA
[2] United Nations Populat Fund UNFPA, Zimbabwe Country Off, Harare, Zimbabwe
[3] Univ London Imperial Coll Sci Technol & Med, Dept Infect Dis Epidemiol, London, England
[4] Biomed Res & Training Inst, Harare, Zimbabwe
[5] Univ Zimbabwe, Dept Med, Harare, Zimbabwe
[6] Univ Zimbabwe, Dept Sociol, Harare, Zimbabwe
[7] Minist Hlth & Child Welf, AIDS TB Unit, Harare, Zimbabwe
[8] Natl AIDS Council, Harare, Zimbabwe
[9] United Nations Program AIDS UNAIDS, Zimbabwe Country Off, Harare, Zimbabwe