1. British Columbia Centre on Substance Use, Vancouver, BC, Canada
2. Interdisciplinary Studies Graduate Program, University of British Columbia, Vancouver, BC, Canada
3. Faculty of Health Sciences, Simon Fraser University, Burnaby, BC, Canada
4. Department of Medicine, University of British Columbia, Vancouver, BC, Canada
5. Centre for Gender and Sexual Health Equity, Vancouver, BC, Canada
6. Program in Addiction Medicine, Yale School of Medicine, New Haven, CT, USA
7. General Internal Medicine, Yale School of Medicine, New Haven, CT, USA