[1] Ontario HIV Treatment Network, Toronto, ON M4T 1X3, Canada
[2] Univ Toronto, Dept Psychiat, Toronto, ON, Canada
[3] Inst Work & Hlth, Toronto, ON, Canada
[4] Univ Toronto, Dalla Lana Sch Publ Hlth, Toronto, ON, Canada
[5] Univ Hlth Network, Div Infect Dis, Toronto, ON, Canada
[6] Georgetown Univ, Med Ctr, Dept Med, Washington, DC 20007 USA
[7] Univ Chicago, Ogburn Stouffer Ctr Social Org Res, Natl Opin Res Ctr, Chicago, IL 60637 USA
[8] St Michaels Hosp, Ctr Res Inner City Hlth, Li Ka Shing Knowledge Inst, Toronto, ON M5B 1W8, Canada
[9] St Michaels Hosp, Keenan Res Ctr, Li Ka Shing Knowledge Inst, Toronto, ON M5B 1W8, Canada
[10] Johns Hopkins Univ, Dept Epidemiol, Bloomberg Sch Publ Hlth, Baltimore, MD USA
[11] Univ Toronto, Dept Hlth Policy Management & Evaluat, Toronto, ON, Canada
[12] McMaster Univ, Dept Clin Epidemiol & Biostat, Hamilton, ON, Canada
[13] Univ Calif Los Angeles, Sch Publ Hlth, Dept Epidemiol, Los Angeles, CA 90024 USA
[14] Univ Pittsburgh, Grad Sch Publ Hlth, Dept Infect Dis & Microbiol, Pittsburgh, PA 15261 USA