1. Grup de Recerca en Addiccions Clínic, Institut Clínic de Neurociències, Barcelona, Spain
2. Universitat de Barcelona, Barcelona, Spain
3. Institut d’Investigacions Biomèdiques Agustí Pi i Sunyer, Barcelona, Spain
4. Spanish Network of Addictive Disorders (RTA), Madrid, Spain
5. Institute for Mental Health Policy Research, Centre for Addiction and Mental Health (CAMH), Toronto, ON, Canada
6. Dalla Lana School of Public Health, University of Toronto, Toronto, ON, Canada
7. Department of Psychiatry, Faculty of Medicine, University of Toronto, 1 King’s College Circle, Toronto, ON, Canada
8. WHO/PAHO Collaborating Centre in Addiction and Mental Health, Toronto, ON, Canada
9. Epidemiological Research Unit, Klinische Psychologie & Psychotherapie, Technische Universität Dresden, Dresden, Germany
10. Section of Cancer Surveillance, International Agency for Research on Cancer, Lyon, France
11. Divisió d’Anàlisi de la Demanda i l’Activitat, Servei Català de la Salut, Barcelona, Spain
12. Program on Substance Abuse, Department of Health, Public Health Agency of Catalonia, Government of Catalonia, Barcelona, Spain
13. Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK
14. Faculty of Health, Medicine and Life Sciences, Maastricht University, Maastricht, MD, The Netherlands