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Authors
Bakker, Lars-Petter https://orcid.org/0000-0001-5586-8315
Småstuen, Milada Cvancarova
Reichelt, Jon Gerhard
Gjerstad, Christer Lunde
Tønnessen, Arnfinn
Weisæth, Lars
Herlofsen, Pål Herlof
Grov, Ellen Karine
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Article History
Received: 21 March 2018
Accepted: 23 May 2019
First Online: 10 June 2019
Ethics approval and consent to participate
: Participants provided written informed consent. The study was approved by the Norwegian Regional Comittee for Medical Ethics (Reference number: 2016/392).
: Not applicable.
: The authors declare that they have no competing interests.
