| Affiliation: | 1. Addictive Behaviors Unit, Clinic Hospital, Neuroscience Institute, Barcelona, Spain;2. Catalon Agency of Quality and Health Evaluation, Barcelona, Spain;3. Biomedical Research Network Centre of Epidemiology and Public Health, Barcelona, Spain;4. Sant Pau Biomedical Research Institute, Barcelona, Spain;5. Institute of Health and Society, Newcastle University, Newcastle upon Tyne, UK;6. Department of Family Medicine, School for Public Health and Primary Care, Maastricht University, Maastricht, The Netherlands |
