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Authors
Nordvik, Øyvind
Heggdal, Peder O. Laugen
Brännström, K. Jonas
Aarstad, Anne Kari
Aarstad, Hans Jørgen https://orcid.org/0000-0003-4313-3981
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Article History
Received: 5 October 2020
Accepted: 10 June 2021
First Online: 22 June 2021
Declarations
:
: The Norwegian Regional Committees for Medical and Health Research Ethics approved the project (project reference: 2013/1302). Subjects provided written consent prior to inclusion.
: The written consent and the approval from The Norwegian Regional Committees for Medical and Health Research Ethics included consent for publication.
: The authors report no conflicts of interest.
