1. Département de Psychiatrie, Faculté de Médecine, Université de Montréal, Montréal, Québec, H3T 1J4, Canada
2. Centre de Recherche, CHU Ste-Justine, Montréal, Quebec, H3T 1C4, Canada
3. Department of Sociology, McGill University, Montreal, Quebec, H3A 2T7, Canada
4. Department of Psychiatry, Dalhousie University, Halifax, Nova Scotia, B3H 2E2, Canada
5. Department of Psychology & Neuroscience, Dalhousie University, Halifax, Nova Scotia, Canada
6. Centre for Addiction and Mental Health, Toronto, Ontario, M6J 1H4, Canada
7. Department of Psychiatry, University of Toronto, Toronto, Ontario, M5T 1R8, Canada
8. Cumming School of Medicine, University of Calgary, Calgary, Alberta, T2N 4N1, Canada
9. Department of Community Health Sciences, University of Calgary, Calgary, Alberta, T2N 4Z6, Canada
10. British Columbia Centre on Substance Use, Vancouver, British Columbia, V6Z 2A9, Canada
11. Research Centre du Chum, Montreal, Quebec, H2X 0C1, Canada