Bjørneklett, Rune http://orcid.org/0000-0001-6637-5743
Solbakken, Vilde
Bostad, Leif
Fismen, Anne-Siri
Article History
Received: 24 January 2018
Accepted: 6 May 2018
First Online: 22 May 2018
Compliance with ethical standards
:
: The authors declare no conflict of interest regarding the publication of this article.