1. Department of Behavioral Science and Learning; Linköping University; Linköping Sweden
2. Center for Dependency Disorders; Stockholm County Council; Stockholm Sweden
3. Center for Psychiatry Research; Department of Clinical Neuroscience; Karolinska Institutet; Stockholm Sweden
4. Center for Social Research on Alcohol and Drugs; Stockholm University; Stockholm Sweden
5. Department of Public Health Science; Karolinska Institutet; Stockholm Sweden