Granhus, Aksel http://orcid.org/0000-0002-1713-9928
Metslaid, Marek http://orcid.org/0000-0003-3384-2717
Kvaalen, Harald http://orcid.org/0000-0001-9346-9331
Søgaard, Gunnhild http://orcid.org/0000-0003-4798-3932
Article History
Received: 29 November 2017
Accepted: 12 July 2018
First Online: 16 July 2018