Knapstad, Marit
Nordgreen, Tine
Smith, Otto R. F.
Funding for this research was provided by:
The present research was funded by the Norwegian Ministry of Health and Care Services
Article History
Received: 6 February 2018
Accepted: 7 August 2018
First Online: 16 August 2018
Ethics approval and consent to participate
: The study was approved by the regional ethics committee for Western Norway (REK-vest no. 2014/597). All participants have signed an informed consent scheme.
: The authors declare that they have no competing interests.
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