[1] Johns Hopkins Sch Publ Hlth, Dept Epidemiol, Key Populat Program, Baltimore, MD 21205 USA
[2] Human Sci Res Council, Port Elizabeth, South Africa
[3] TB HIV Care Assoc, Port Elizabeth, South Africa
[4] Univ Witwatersrand, Wits Reprod Hlth & HIV Inst, Fac Hlth Sci, Johannesburg, South Africa
[5] Nelson Mandela Metropolitan Univ, Off Deputy Vice Chancellor Res & Engagement, Port Elizabeth, South Africa
[6] Univ Limpopo, Dept Social Work, Sovenga, South Africa
[7] 722 W 168th St, New York, NY 10032 USA