[1] Haukeland Hosp, Dept Occupat Med, Bergen, Norway
[2] Western Norway Univ Appl Sci, Dept Hlth & Caring Sci, Bergen, Norway
[3] Univ Bergen, Dept Global Publ Hlth & Primary Care, Ctr Int Hlth, Bergen, Norway
[4] Dept Med Sci Resp Allergy & Sleep Res, Uppsala, Sweden
[5] Umea Univ, Dept Publ Hlth & Clin Med, Sustainable Hlth, Umea, Sweden
[6] Aarhus Univ, Dept Publ Hlth, Res Unit Environm Occupat & Hlth, Danish Ramazzini Ctr, Aarhus, Denmark
[7] Landspitali Univ Hosp, Dept Sleep, Reykjavik, Iceland
[8] Univ Bergen, Haukeland Univ Hosp, Ctr Int Hlth, Dept Global Publ Hlth & Primary Care,Dept Occupat, Bergen, Norway
[9] Univ Bergen, Haukeland Univ Hosp, Dept Gynecol & Obstet, Dept Clin Sci, Bergen, Norway