[1] Univ Antwerp, Fac Med, B-2020 Antwerp, Belgium
[2] WHO, HIV Dept, CH-1211 Geneva, Switzerland
[3] Univ Colorado, Colorado Ctr AIDS Res, Denver, CO 80202 USA
[4] Denver Vet Affairs, Med Ctr, Hlth Sci Ctr, Denver, CO 80202 USA
[5] Inst Trop Med, B-2000 Antwerp, Belgium
[6] Univ Amsterdam, Acad Med Ctr, NL-1105 AZ Amsterdam, Netherlands
[7] Chelsea & Westminster Hosp, London, England
[8] Univ Bordeaux 2, ISPED, F-33076 Bordeaux, France
[9] Univ London Imperial Coll Sci Technol & Med, Div Med, Wellcome Trust Ctr Res Clin Trop Med, London SW7 2AZ, England
[10] Natl Inst Med Res, London NW7 1AA, England
[11] Duke Univ, Med Ctr, Durham, NC 27706 USA
[12] Univ N Carolina, Chapel Hill, NC USA
[13] Natl Ctr HIV Epidemiol & Clin Res, Sydney, NSW, Australia
[14] Makerere Univ, Infect Dis Inst, Kampala, Uganda
[15] Univ Western Australia, Dept Clin Immunol, Royal Perth Hosp, Perth, WA 6009, Australia
[16] Univ Western Australia, Sch Pathol & Lab Med, Perth, WA 6009, Australia
[17] WHO, HTM STBTHD, CH-1211 Geneva, Switzerland
[18] Univ Cape Town, Div Clin Pharmacol, Dept Med, ZA-7925 Cape Town, South Africa
[19] London Sch Hyg & Trop Med, Clin Res Unit, Dept Infect & Trop Dis, London WC1, England
[20] Univ Cape Town, Inst Infect Dis & Mol Med, ZA-7925 Cape Town, South Africa
[21] Univ Cape Town, Dept Med, ZA-7925 Cape Town, South Africa
[22] Univ Cape Town, Desmond Tutu HIV Ctr, Inst Infect Dis & Mol Med, Fac Hlth Sci, ZA-7925 Cape Town, South Africa