[1] Univ Manitoba, Med Microbiol & Infect Dis, Winnipeg, MB, Canada
[2] Ctr AIDS Programme Res South Africa, Durban, South Africa
[3] Henry M Jackson Fdn Adv Mil Med, Bethesda, MD USA
[4] Walter Reed Army Inst Res, US Mil HIV Res Program, Silver Spring, MD USA
[5] CHUM, Ctr Rech, Montreal, PQ, Canada
[6] Univ Montreal, Dept Microbiol Infectiol & Immunol, Montreal, PQ, Canada
[7] Thai Red Cross AIDS Res Ctr, South East Asia Res Collaborat HIV SEARCH, Bangkok, Thailand
[8] Armed Forces Res Inst Med Sci, Dept Retrovirol, Bangkok, Thailand