Kjelle, Elin https://orcid.org/0000-0001-6370-2729
Lysdahl, Kristin Bakke
Olerud, Hilde Merete
Myklebust, Aud Mette
Article History
Received: 17 August 2017
Accepted: 12 April 2018
First Online: 25 April 2018
Ethics approval and consent to participate
: Ethics approval was not applicable in this study. The Norwegian Centre for Research Data approved the treatment of personal information – project reference 45,739. All participants gave written consent to participate in the study.
: The authors declare that they have no competing interests.
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