Funding for this research was provided by:
Norwegian Ministry of Education and Research (n/a)
Norwegian Ministry of Health and Care Services (n/a)
Text and Data Mining valid from 2020-04-16
Received: 17 June 2019
Accepted: 5 April 2020
First Online: 16 April 2020
Ethics approval and consent to participate
: Electronic informed consent was obtained after the participants had received a detailed written introduction to the study. The study was approved by the Regional Committee for Medical and Health Research Ethics in Western Norway (no. 2017/1176).
: Not applicable.
: The authors of this paper have no competing interests to report.