Kristoffersen, Espen Saxhaug http://orcid.org/0000-0002-8999-5424
Aaseth, Kjersti
Grande, Ragnhild Berling
Lundqvist, Christofer
Russell, Michael Bjørn
Funding for this research was provided by:
Akershus University Hospital
Universitetet i Oslo
Article History
Received: 2 July 2018
Accepted: 24 July 2018
First Online: 3 August 2018
Competing interest
: The authors declare that they have no competing interests.
: The Regional Committee for Medical Research Ethics and the Norwegian Social Science Data Services approved the study. All participants gave informed consent.
: Not applicable.
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