Halvorsen, A.
Pettersen, A. L.
Nilsen, S. M.
Halle, K. Krizak
Schaanning, E. Elmenhorst
Rekand, T. http://orcid.org/0000-0002-2506-9501
Article History
Received: 10 August 2018
Revised: 6 November 2018
Accepted: 7 November 2018
First Online: 20 December 2018
Compliance with ethical standards
:
: The NorSCIR registry is approved by the Norwegian Data Protection Authority (09/01084-2/CGN). Registration in the registry is voluntary, and written informed consent is obtained before registration occurs. Ethical approval for this study was obtained from regional committees for medical and health research ethics (2017/1092).
: The authors declare that they have no conflict of interests.