1. Center for Clinical Documentation and Evaluation (SKDE) Tromsø Norway
2. Department of Community Medicine UiT – The Arctic University of Norway Tromsø Norway
3. Centre for Sami Health Research Department of Community Medicine UiT – The Arctic University of Norway Tromsø Norway
4. Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders Innlandet Hospital Trust Hamar Norway
5. Department of Clinical Medicine UiT – The Arctic University of Norway TromsøNorway
6. Institute of Clinical Medicine University of OsloOslo Norway
7. Institute of Health and Society University of OsloOslo Norway
8. Department of Mental Disorders Norwegian Institute of Public HealthOslo Norway
9. Department of Psychology University of OsloOslo Norway
10. PharmacoEpidemiology and Drug Safety Research Group School of Pharmacy University of Oslo Oslo Norway
11. Department of Medical Epidemiology and Biostatistics Karolinska Institutet Stockholm Sweden
12. Icahn School of Medicine Mt Sinai Hospital New York NY USA
13. Norwegian Medical Association Oslo Norway
14. Division of Mental Health and Substance Abuse University Hospitalof North Norway Tromsø Norway