Brækkan, Eivind Hestvik http://orcid.org/0000-0002-3286-9865
Myrland, Øystein
Article History
Received: 1 June 2018
Accepted: 23 October 2019
First Online: 31 October 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human participants or animals performed by any of the authors.