Received: 11 November 2021
Accepted: 7 January 2022
First Online: 21 January 2022
: This study was approved by the Regional Committee for Medical and Health Research Ethics, the Faculty of medicine, mailbox 8905, 7491 Trondheim. The approval number was #2018/2422/Rek Midt. The participants have given written informed consent.
: The present study was approved by the HUNT Research Centre.
: The authors declare that they have no competing interests.