Økland, Arnfinn Lodden
Skoge, Renate Hvidsten
Nylund, Are
Article History
Received: 6 November 2017
Accepted: 1 February 2018
First Online: 14 February 2018
Compliance with ethical standards
:
: The authors declare that they have no conflicts of interest.
: All applicable international, national, and institutional guidelines for the care and use of animals were followed.