Halle, Mari Kyllesø
Tangen, Ingvild Løberg
Berg, Hege Fredriksen
Hoivik, Erling Andre
Mauland, Karen K
Kusonmano, Kanthida
Berg, Anna
Hurtado, Antoni
Kalland, Karl Henning
Øyan, Anne M
Stefansson, Ingunn
Vintermyr, Olav K
Werner, Henrica M
Haldorsen, Ingfrid S
Trovik, Jone
Salvesen, Helga B
Krakstad, Camilla
Article History
Received: 4 July 2017
Revised: 26 October 2017
Accepted: 26 October 2017
First Online: 23 November 2017
Change Date: 6 February 2018
Change Type: Update
Change Details: This paper was modified 12 months after initial publication to switch to Creative Commons licence terms, as noted at publication
Competing interests
: The authors declare no conflict of interest.