1. Département de Psychiatrie, Faculté de Médecine, Université de Montréal, Montréal, Québec, Canada
2. Centre de Recherche, CHU Ste-Justine, Montréal, Québec, Canada
3. Department of Sociology, McGill University, Montreal, Québec, Canada
4. Centre for Addiction and Mental Health, Toronto, Ontario, Canada
5. Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
6. British Columbia Centre on Substance Use, Vancouver, British Columbia, Canada
7. Department of Psychiatry, Dalhousie University, QEII Health Sciences Centre, Halifax, Nova Scotia, Canada
8. University of Calgary Cumming School of Medicine, Community Health Sciences, University of Calgary, Calgary, Alberta, Canada
9. Centre de Recherche du CHUM, Montreal, Quebec, Canada.