Quist-Paulsen, Else http://orcid.org/0000-0002-1633-5660
Kran, Anne-Marte Bakken
Lindland, Elisabeth S.
Ellefsen, Katrine
Sandvik, Leiv
Dunlop, Oona
Ormaasen, Vidar
Article History
Received: 21 December 2017
Accepted: 29 November 2018
First Online: 22 January 2019
Ethics approval and consent to participate
: The Regional Committees for Medical and Health Research Ethics (REC South East, reference number 2011/2578) and the ethical council of the hospital reviewed and approved the study protocol. Written informed consent was obtained from all individual patients or their next of kin included in the study.
: Not applicable.
: The authors declare that they have no competing interests.
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