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Authors
Skar-Fröding, Regina
Clausen, Hanne Kristin
Šaltytė Benth, Jūratė
Ruud, Torleif
Slade, Mike
Sverdvik Heiervang, Kristin
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Article History
Received: 20 January 2021
Accepted: 15 April 2021
First Online: 8 May 2021
Declarations
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: The study was approved by the Regional Committee for Medical and Health Research Ethics (REK Sørøst B 2015/2169), and followed the principles of the Declaration of Helsinki. Participation was voluntary and based on written informed consent.
: Not applicable.
: The authors declare that they have no competing interest. Mike Slade acknowledges the support of Center for Mental Health and Substance Abuse, University of South-Eastern Norway and the NIHR Nottingham Biomedical Research Centre. Torleif Ruud is a member of the editorial board (Associate Editor) of this journal.
