[1] World Hlth Org, Dept HIV, CH-1211 Geneva 27, Switzerland
[2] Tufts Univ, Sch Med, Boston, MA 02111 USA
[3] US Ctr Dis Control & Prevent, Atlanta, GA USA
[4] Univ Calif San Francisco, San Francisco, CA 94143 USA
[5] Columbia Univ, Med Ctr, New York, NY USA
[6] Natl Inst Communicable Dis, AIDS Virus Res Unit, Johannesburg, South Africa
[7] Inst Rech Dev, UMI 233 TransVIHMI, Montpellier, France
[8] Univ Montpellier I, F-34006 Montpellier, France
[9] Univ Med Ctr Utrecht, Utrecht, Netherlands
[10] Data First Consulting, Belmont, CA USA
[11] Univ Stellenbosch, Cape Town, South Africa
[12] Johns Hopkins Bloomberg, Sch Publ Hlth, Baltimore, MD USA
[13] UCL, London WC1E 6BT, England
[14] Univ Cattolica Sacro Cuore, Inst Clin Infect Dis, Rome, Italy
[15] Siena Univ Hosp, Div Infect Dis, Siena, Italy
[16] Univ Hosp Geneva, Geneva, Switzerland
[17] Publ Hlth Agcy Canada, Ottawa, ON, Canada
[18] Alfred Hosp, Melbourne, Vic, Australia
[19] Int Treatment Preparedness Coalit, Bangkok, Thailand
[20] Med Sans Frontiere Access Campaign, Geneva, Switzerland