Andersen, Amanda Iselin Olesen https://orcid.org/0009-0004-8131-4622
Knapstad, Marit https://orcid.org/0000-0003-0958-1596
Smith, Otto Robert Frans https://orcid.org/0000-0002-6306-2239
Funding for this research was provided by:
Norges Forskningsråd (260659)
Norwegian Institute of Public Health
Article History
Received: 8 October 2025
Accepted: 26 November 2025
First Online: 9 December 2025
Declarations
:
: The trial protocol was approved by the Regional Committee for Medical and Health Research Ethics, Western Norway (REK-vest 2015/885). All participants provided written informed consent prior to enrolment, including consent for linkage of trial data to routinely collected administrative registry data, as permitted by the ethics approval.
: Not applicable.
: The authors declare that they have no competing interests.