1. Centre for Advancing Health Outcomes, Vancouver, British Columbia, Canada
2. BC Centre for Disease Control, Vancouver, British Columbia, Canada
3. First Nations Health Authority, Vancouver, British Columbia, Canada
4. School of Public Health and Social Policy, University of Victoria, Victoria, British Columbia, Canada
5. Faculty of Health Sciences, Simon Fraser University, Burnaby, British Columbia, Canada
6. Canadian Institute for Substance Use Research, Victoria, British Columbia, Canada
7. Department of Nursing, University of Victoria, Victoria, British Columbia, Canada
8. School of Population and Public Health, University of British Columbia, Vancouver, British Columbia, Canada
9. British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
10. Faculty of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
11. AVI Health and Community Services, Victoria, British Columbia, Canada
12. Island Medical Program, University of Victoria, Victoria, British Columbia, Canada