About the Authors

Andrew D. Oxman

To whom correspondence should be addressed. E-mail: oxman@online.no

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Signe Flottorp

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Kari Håvelsrud

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Atle Fretheim

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Jan Odgaard-Jensen

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Astrid Austvoll-Dahlgren

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, Norway

Cheryl Carling

Affiliation Norwegian Knowledge Centre for the Health Services, Oslo, 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, Section for General Practice, University of Bergen, Bergen, Norway

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conducted the statistical analyses: JO. Contributed to the conduct of the trial: CC AA SF KH AF JO. Contributed to the revisions of the protocol and report: SF KH AF JO AA CC SP BB. Wrote the first draft of the protocol and the report: AO. Had primary responsibility for the conduct of the trial: AO.