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Authors
Sivertsen, Einar Andreas http://orcid.org/0000-0003-0591-3653
Vik, Jarle
Meland, Arn Ståle Vålnes
Nerhus, Tor Kjetil
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Article History
Received: 20 May 2021
Accepted: 4 July 2021
First Online: 9 July 2021
Declarations
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: The authors report no conflict of interest.
: The regional health ethics board approved the study with reference number 53-07027a 12007.70.
: All participants consented to participate in the study.
