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Authors
Bang, Lasse http://orcid.org/0000-0002-3548-5234
Kristensen, Unn Beate
Wisting, Line
Stedal, Kristin
Garte, Marianne
Minde, Åse
Rø, Øyvind
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Article History
Received: 16 September 2019
Accepted: 22 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: The study was approved by the Regional Committees for Medical and Health Research Ethics (REC South-East) in Norway (reference: 2013/1209). All participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
