1. Department of Addiction Medicine Haukeland University Hospital Bergen Norway
2. Department of Global Public Health and Primary Care University of Bergen Bergen Norway
3. Department of Forensic Medicine Oslo University Hospital Oslo Norway
4. Center for psychopharmacology Diakonhjemmet Hospital Oslo Norway
5. Norwegian Center for Addiction Research University of Oslo Oslo Norway
6. Division of Psychiatry Haukeland University Hospital Bergen Norway
7. Department of Clinical Pharmacology St. Olav University Hospital Trondheim Norway
8. Department of Clinical and Molecular Medicine Norwegian University of Science and Technology Trondheim Norway
9. Institute of Clinical Medicine UiT – Norway's Arctic University Tromsø Norway
10. Department of Alcohol, Tobacco and Drugs Norwegian Institute of Public Health Oslo Norway
11. Norwegian National Competency Centre for Dual Disorder Innland Hospital Trust Hamar Norway