Fougner, Christian http://orcid.org/0000-0002-9325-7803
Bergholtz, Helga http://orcid.org/0000-0003-0999-1106
Norum, Jens Henrik http://orcid.org/0000-0003-2689-7154
Sørlie, Therese
Article History
Received: 24 September 2019
Accepted: 16 March 2020
First Online: 14 April 2020
Competing interests
: The authors declare no competing interests.