1. Department of Dermatology Stavanger University Hospital Stavanger Norway
2. Department of Public Health, Faculty of Health Sciences University of Stavanger Stavanger Norway
3. Institute of Medical Psychology Justus‐Liebig‐University Gießen Giessen Germany
4. Innlandet Hospital Trust Norwegian National Advisory Unit on Concurrent Substance Abuse and Mental Health Disorders Brumunddal Norway
5. Innland Norway University of Applied Sciences Faculty of Social and Health Sciences Elverum Hedmark Norway
6. Department of Dermatology Brest University and Regional Hospital Centre Brest Bretagne France
7. Istituto Dermopatico Dell'Immacolata IDI‐IRCCS Clinical Epidemiology Unit Rome Italy
8. Hudläkartjänst Stockholm Sweden
9. Division of Mental Health and Addiction Vestfold Hospital Trust Tønsberg Norway
10. Department of Dermatology Skåne University Hospital Lund Lund Sweden