1. Department of Psychiatry, Lovisenberg Diaconal Hospital, Oslo, Norway
2. Division of Mental Health and Addiction, Institute of Clinical Medicine, University of Oslo, Norway
3. Faculty of Health Studies, VID – Specialized University, Oslo, Akershus, Norway
4. KoRus Øst, Inland Hospital Trust, Norway
5. Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders, Innlandet Hospital Trust, Hamar, Norway
6. Department of Health and Social Sciences, Innlandet University Collage, Elverum, Norway
7. Section of Clinical Nursing Research, Lovisenberg Diaconal University College, Oslo, Norway
8. Division of Mental Health and Addiction, Oslo University Hospital, Norway