Funding for this research was provided by:
Norges Forskningsråd (256681/H10)
Article History
Received: 27 November 2019
Accepted: 20 August 2020
First Online: 26 August 2020
Ethics approval and consent to participate
: The Regional Committees for Research Ethics in Norway considered that the study was not governed by the Health Research Act. The study followed the Helsinki declaration, and was approved by the Norwegian social science data services (NSD, ID 54855). All participants gave their informed consent before participating in the study.
: Not applicable.
: None declared.