Skeie, Marit S.
Klock, Kristin S.
Article History
Received: 2 March 2017
Accepted: 24 January 2018
First Online: 7 February 2018
Ethics approval and consent to participate
: Not applicable.
: The authors declare that they have no competing interests. There are no financial completing interests as we have not received any grants.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.