1. Department of Medicine, University of Manitoba, Health Sciences Centre, Winnipeg, Canada
2. British Columbia Centre on Substance Use, British Columbia Centre for Excellence in HIV/AIDS, St. Paul’s Hospital, Vancouver, Canada
3. School of Public Policy, Simon Fraser University, Vancouver, Canada
4. Department of Medicine, University of British Columbia, St. Paul’s Hospital, Vancouver, Canada
5. School of Population and Public Health, University of British Columbia, Vancouver, Canada
6. Faculty of Health Sciences, Simon Fraser University, Burnaby, Canada