Folkestad, Torgeir
Brurberg, Kjetil Gundro
Nordhuus, Kine Marie
Tveiten, Christine Kooy
Guttormsen, Anne Berit
Os, Ingrid
Beitland, Sigrid http://orcid.org/0000-0001-8803-0105
Article History
Received: 6 July 2019
Accepted: 16 December 2019
First Online: 2 January 2020
Ethics approval and consent to participate
: Not applicable.
: Not applicable.
: The authors declare that they have no competing interests.