Larsen, Marie Hamilton http://orcid.org/0000-0001-9113-1062
Hagen, Kåre Birger
Krogstad, Anne Lene
Wahl, Astrid Klopstad
Article History
First Online: 15 October 2018
Compliance with Ethical Standards
:
: No sources of funding were received for the preparation of this article.
: Marie Hamilton Larsen, Kåre Birger Hagen, Anne Lene Krogstad, and Astrid KlopstadWahl have no conflicts of interest that are directly relevant to the contents of this article.