Birkeland, E.
Zhang, S.
Poduval, D.
Geisler, J.
Nakken, S. http://orcid.org/0000-0001-8468-2050
Vodak, D.
Meza-Zepeda, L. A.
Hovig, E. http://orcid.org/0000-0002-9103-1077
Myklebost, O. http://orcid.org/0000-0002-2866-3223
Knappskog, S.
Lønning, P. E. http://orcid.org/0000-0002-8890-6303
Article History
Received: 11 October 2017
Accepted: 7 June 2018
First Online: 10 July 2018
Competing interests
: The authors declare no competing interests.