Funding for this research was provided by:
Norges Forskningsråd (226537)
Article History
Received: 16 January 2018
Accepted: 13 July 2018
First Online: 3 August 2018
Ethics approval and consent to participate
: The Regional committees for Medical and Health Research Ethics in Norway, by the committee REC South East B, reviewed the research proposal (study protocol number 2013/1626/REK sør-øst B). The committee ruled that no formal ethics approval was required in this particular case. The Norwegian Social Science Data Services (NSD) approved the study (project ID 36017). All participants signed an informed consent form. Data holding potential risk of disclosing identifiable information about participants has been unidentified in the presentations.
: Not applicable.
: The authors declare that they have no competing interests.
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