Kvaløy, Kirsti http://orcid.org/0000-0002-8038-917X
Page, Christian Magnus http://orcid.org/0000-0002-1897-3666
Holmen, Turid Lingaas
Article History
Received: 4 May 2018
Accepted: 7 October 2018
First Online: 5 November 2018
Competing Interests
: The authors declare no competing interests.