Rasmussen, Erik Børve
Rø, Karin Isaksson
Article History
Received: 8 November 2017
Accepted: 23 April 2018
First Online: 2 May 2018
Ethics approval and consent to participate
: Norway has a single centralised official data protection service (the Norwegian Social Science Data Service) that is responsible for granting permits to research projects that are not covered by the Health Research Act. The Norwegian Social Science Data Services approved the study (project number 41259). Informed consent to participate was elicited in writing. Participants were given the option to check the data used for publication.
: The authors declare they have no competing interests.
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