[1] St Pauls Hosp, British Columbia Ctr Excellence HIV AIDS, Vancouver, BC V6Z 1Y6, Canada
[2] St Pauls Hosp, Dept Hlth Care & Epidemiol, Vancouver, BC V6Z 1Y6, Canada
[3] St Pauls Hosp, Dept Med, Vancouver, BC V6Z 1Y6, Canada
[4] Univ British Columbia, Div Crit Care Med, Vancouver, BC V5Z 1M9, Canada
[5] Univ British Columbia, Div Resp Med, Vancouver, BC V5Z 1M9, Canada
[6] Univ British Columbia, Fac Med, Vancouver, BC V5Z 1M9, Canada
[7] Canadian HIV Trials Network, Vancouver, BC, Canada