1. Institute of Clinical Medicine, Faculty of Health Sciences, University of Tromsø, the Arctic University of Norway, Tromsø, Norway
2. Division of general psychiatry, Nordland Hospital, Bodø, Norway
3. Outpatient clinic of psychiatry, Kirkenes Hospital, Kirkenes, Norway
4. Department of Psychiatry and Addictive Disorder, Arkhangelsk Clinical Psychiatric Hospital, Arkhangelsk region, Russia