[1] Univ KwaZulu Natal, Pietermaritzburg, South Africa
[2] Univ Cape Town, ZA-7925 Cape Town, South Africa
[3] Desmond Tutu HIV Fdn, Cape Town, South Africa
[4] MRC UVRI Uganda Res Unit AIDS, Masaka, Uganda
[5] US MHRP, Bethesda, MD USA
[6] IAVI, New York, NY USA
[7] GHAR Consulting Inc, New York, NY USA