Vedaa, Øystein
Pallesen, Ståle
Erevik, Eilin K.
Svensen, Erling
Waage, Siri
Bjorvatn, Bjørn
Sivertsen, Børge
Harris, Anette
Funding for this research was provided by:
Nordic Program on Health and Welfare (74809)
Article History
Received: 8 March 2018
Accepted: 28 October 2018
First Online: 7 November 2018
Compliance with ethical standards
:
: The study was approved by the Regional Committee for Medical and Health Research Ethics, Northern Norway (number 2013/526/REK nor) and by the Norwegian Data Inspectorate (13/00569-2/CGN).
: Informed consent was obtained from all participants included in the study.
: The authors declare that they have no conflict of interest.