About the Authors

Maria Fagerbakke Eldevik

mel077@uib.no

Affiliations Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway, Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway

Elisabeth Flo

Affiliations Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway, Department of Psychosocial Science, University of Bergen, Bergen, Norway

Bente Elisabeth Moen

Affiliations Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway, Department of Occupational Medicine, Haukeland University Hospital, Bergen, Norway

Ståle Pallesen

Affiliations Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway, Department of Psychosocial Science, University of Bergen, Bergen, Norway

Bjørn Bjorvatn

Affiliations Norwegian Competence Center for Sleep Disorders, Haukeland University Hospital, Bergen, Norway, Department of Public Health and Primary Health Care, University of Bergen, Bergen, Norway

Competing Interests

The authors have the following interest: Bjorvatn B has been paid for speaking engagements for different businesses (Glaxo, Nycomed, ResMed, Confex, Medi3). This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: MFE EF BEM SP BB. Performed the experiments: MFE EF BEM SP BB. Analyzed the data: MFE EF SP BB. Wrote the paper: MFE EF BEM SP BB.