1. Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, 33 Ursula Franklin Street, Toronto, ON M5S 2S1, Canada
2. Institute of Clinical Psychology and Psychotherapy, Technische Universität Dresden, Chemnitzer Str. 46, 01187 Dresden, Germany
3. Centre for Interdisciplinary Addiction Research (ZIS), Department of Psychiatry and Psychotherapy, University Medical Center Hamburg-Eppendorf (UKE), Martinistraße 52, 20246 Hamburg, Germany
4. Dalla Lana School of Public Health, University of Toronto, 155 College Street, Toronto, ON M5T 1P8, Canada
5. Faculty of Medicine, Institute of Medical Science, University of Toronto, Medical Sciences Building, 1 King’s College Circle, Toronto, ON M5S 1A8, Canada
6. Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, 33 Russell Street, Toronto, ON M5S 3M1, Canada
7. Department of Psychiatry, University of Toronto, 250 College Street, Toronto, ON M5T 1R8, Canada
8. Program on Substance Abuse, Public Health Agency of Catalonia/Agència de Salut Pública de Catalunya, Departament de Salut, Generalitat de Catalunya, Roc Boronat 81-95, 08005 Barcelona, Spain
9. Department of Psychiatry, Medical Faculty, University of Leipzig, Semmelweisstraße 10, 04103 Leipzig, Germany
10. Care and Public Health Research Institute, Maastricht University, 6200 MD Maastricht, The Netherlands