1. Department of Global Public Health and Primary Care University of Bergen, Bergen, Norway
2. Norwegian Competence Center for Sleep Disorders Haukeland University Hospital, Bergen, Norway
3. Department of Psychosocial Science University of Bergen, Bergen, Norway
4. Department of Clinical Psychology University of Bergen, Bergen, Norway;
5. Division of Mental Health Norwegian Institute of Public Health, Bergen, Norway
6. Norwegian Competence Center for Sleep Disorders and Department of Child and Adolescent Psychiatry Haukeland University Hospital, Bergen, Norway