Funding for this research was provided by:
Norwegian Ministry of Education and Research (not applicaple)
Norwegian Ministry of Health and Care (Not applicable)
Received: 21 February 2019
Accepted: 16 January 2020
First Online: 30 January 2020
Ethics approval and consent to participate
: The SHoT2018 study was approved by the Regional Committee for Medical and Health Research Ethics in Western Norway (no. 2017/1176). Electronic informed consent was obtained after the participants had received a detailed introduction to the study.
: Not applicable.
: The authors declare that they have no competing interests.