1. British Columbia Centre on Substance Use, Vancouver, BC, Canada
2. Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada
3. School of Population and Public Health, The University of British Columbia, Vancouver, BC, Canada
4. Interdepartmental Division of Addiction Medicine, Providence Health Care, Vancouver, BC, Canada
5. Department of Family Practice, The University of British Columbia, Vancouver, BC, Canada
6. Centre for Advancing Health Outcomes, Vancouver, BC, Canada
7. Division of Social Medicine, Department of Medicine, The University of British Columbia, Vancouver, BC, Canada