1. University of British Columbia, Vancouver, BC, Canada
2. British Columbia Centre on Substance Use, Vancouver, BC, Canada
3. British Columbia Centre for Excellence in HIV/AIDS, Vancouver, BC, Canada
4. University of Victoria, Victoria, BC, Canada
5. Community-Based Research Centre, Vancouver, BC, Canada
6. Toronto Metropolitan University, Toronto, ON, Canada
7. University of Toronto, ON, Canada
8. Western University, London, ON, Canada
9. McGill University, Montreal, QC, Canada
10. Research Institute of the McGill University Health Centre, Montréal, QC, Canada
11. Institut national de santé publique du Québec, Montréal, QC, Canada
12. Louisiana State University Shreveport, Shreveport, Louisiana, USA
13. Simon Fraser University, Burnaby, BC, Canada