[1] Univ Bergen, Dept Global Publ Hlth & Primary Care, N-5018 Bergen, Norway
[2] Univ Bergen, Dept Psychosocial Sci, N-5018 Bergen, Norway
[3] Univ Bergen, Dept Biol & Med Psychol, N-5018 Bergen, Norway
[4] Haukeland Hosp, Norwegian Competence Ctr Sleep Disorders, Bergen, Norway
[5] Norwegian Inst Publ Hlth, Div Mental Hlth, Oslo, Norway
[6] Uni Res, Uni Hlth, Bergen, Norway
[7] Helse Fonna HF, Dept Psychiat, Haugesund, Norway
[8] Univ Bergen, Dept Clin Sci, Sect Thorac Med, N-5018 Bergen, Norway