Landfors, Miriam
Johansen, Jostein
Aronsen, Jan Magnus
Vågbø, Cathrine Broberg
Doré, Louis C
He, Chuan
Sjaastad, Ivar
Sætrom, Pål
Fedorcsák, Péter
Dahl, John Arne
Aanes, Håvard
Fußer, Markus
Klungland, Arne
Article History
Received: 12 December 2016
Accepted: 24 February 2017
First Online: 9 May 2017
Competing interests
: The authors declare no conflict of interest.