[1] Univ Hosp Geneva, Div Infect Dis, HIV Unit, Geneva, Switzerland
[2] Univ Amsterdam, Acad Med Ctr, Dept Infect Dis Trop Med & AIDS, Ctr Poverty Related Communicable Dis,AIGHD, NL-1105 AZ Amsterdam, Netherlands
[3] Univ Basel Hosp, Div Infect Dis, CH-4031 Basel, Switzerland
[4] HIV Monitoring Fdn, Amsterdam, Netherlands
[5] St Pauls Hosp, British Columbia Ctr Excellence HIV AIDS, Populat Hlth Program, Vancouver, BC V6Z 1Y6, Canada
[6] Simon Fraser Univ, Fac Hlth Sci, Burnaby, BC V5A 1S6, Canada
[7] Univ British Columbia, Fac Med, Vancouver, BC, Canada