[1] Univ Cape Town, Fac Hlth Sci, Desmond Tutu HIV Ctr, Inst Infect Dis & Mol Med, ZA-7705 Mowbray, South Africa
[2] Univ Cape Town, Div Child & Adolescent Psychiat, ZA-7700 Rondebosch, South Africa
[3] Univ Cape Town, Sch Publ Hlth & Family Med, Infect Dis Epidemiol Unit, ZA-7925 Observatory, South Africa
[4] MRC, Hlth Syst Res Unit, ZA-7505 Tygerberg, South Africa
[5] MRC, Biomed Informat Res Div, ZA-7505 Tygerberg, South Africa