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Authors
Sunde, Erlend https://orcid.org/0000-0002-3982-5486
Djupedal, Ingebjørg Louise Rockwell https://orcid.org/0000-0002-1862-2620
Vedaa, Øystein https://orcid.org/0000-0003-2719-2375
Pallesen, Ståle https://orcid.org/0000-0002-5831-0840
Bjorvatn, Bjørn https://orcid.org/0000-0001-7051-745X
Waage, Siri https://orcid.org/0000-0001-9891-6348
Nielsen, Morten Birkeland https://orcid.org/0000-0001-7858-8623
Lie, Stein Atle https://orcid.org/0000-0003-4374-9276
Kysnes, Bjarte Birkeland https://orcid.org/0009-0003-2668-202X
Harris, Anette https://orcid.org/0000-0003-0799-8304
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Funding
Funding for this research was provided by:
Norges Forskningsråd (335746)
Norges Forskningsråd (303671)
Norwegian Institute of Public Health
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Article History
Received: 24 November 2025
Accepted: 27 March 2026
First Online: 3 April 2026
Declarations
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: The authors declare no competing interests.
: This study was performed in line with the principles of the Declaration of Helsinki. Approval was granted by the Regional Committee for Medical and Health Research Ethics in Northern Norway (2020/200386). The trial was preregistered (Clinical trials.gov identifier: NCT04693182). Informed consent was obtained from all individual participants included in the study. The study follows the guidelines outlined in the Consolidated Standards of Reporting Trials (CONSORT).
