Nordahl, Dag http://orcid.org/0000-0003-2872-2171
Høifødt, Ragnhild Sørensen
Bohne, Agnes
Landsem, Inger Pauline
Wang, Catharina Elisabeth Arfwedson
Thimm, Jens C.
Article History
Received: 15 August 2018
Accepted: 29 March 2019
First Online: 11 April 2019
Ethics approval and consent to participate
: Ethics approval for this study was obtained from the Regional Committee for Medical and Health Ethics in Northern Norway (2015/614). All participants gave written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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