Kleppe, Lene
Andersson, Eva
Skaftnesmo, Kai Ove
Edvardsen, Rolf B.
Fjelldal, Per Gunnar
Norberg, Birgitta
Bogerd, Jan
Schulz, RĂ¼diger W.
Wargelius, Anna http://orcid.org/0000-0002-3504-6063
Article History
Received: 23 June 2017
Accepted: 20 September 2017
First Online: 3 October 2017
Competing Interests
: The authors declare that they have no competing interests.