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Authors
Nielsen, Morten Birkeland
Christensen, Jan Olav
Finne, Live Bakke
Knardahl, Stein
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Funding
Funding for this research was provided by:
Norges Forskningsråd (237788)
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Article History
Received: 22 January 2019
Accepted: 19 July 2019
First Online: 24 July 2019
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: The project was approved by the Regional Committees for Medical and Health Research Ethics (REC) in Norway, has permission from The Norwegian Data Protection Authority, and was conducted in accordance with the World Medical Association Declaration of Helsinki.
: All study participants provided their informed consent.
