About the Authors

Signe K. Dørheim

sdhy@sus.no

Affiliation MoodNet Research Group, Division of Psychiatry, Stavanger University Hospital, Stavanger, Norway

Bjørn Bjorvatn

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

Malin Eberhard-Gran

Affiliations Health Services Research Center, Akershus University Hospital, Lørenskog, Norway, Division of Mental Health, Norwegian Institute of Public Health, Oslo, Norway, Institute of Clinical Medicine, Campus Akershus University Hospital, University of Oslo, Oslo, Norway

Competing Interests

Signe Dørheim has had paid speaking engagements for AstraZeneca and Pfizer. Bjørn Bjorvatn has had paid speaking engagements for Glaxo and Confex. Malin Eberhard-Gran has indicated no financial conflicts of interest. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials.

Author Contributions

Conceived and designed the experiments: SD BB MEG. Performed the experiments: MEG. Analyzed the data: SD BB MEG. Contributed reagents/materials/analysis tools: SD. Wrote the paper: SD BB MEG.