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Authors
Todd-Kvam, John
Johnsen, Berit
Appleton, Catherine
Stavseth, Marianne Riksheim
Dahl, Hilde
Bukten, Anne
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Funding
Funding for this research was provided by:
University of Oslo
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Article History
Received: 2 April 2025
Accepted: 20 August 2025
First Online: 29 September 2025
Declarations
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: All ethical standards for protecting human subjects have been followed in accordance with standards of the institution’s internal review board or committee for the protection of human subjects where the study was conducted and the Helsinki Declaration of 1975. The study was carried out under exemptions from informed consent granted by the Regional Committees for Medical and Health Research Ethics (REK) in accordance with the Personal Data Act, specifically Article 6 and Article 9. The Norwegian registry linkage has been approved by the Regional Committees for Medical and Health Research Ethics (REC id 2012/1401, 29513), the Norwegian Centre for Research Data (NSD id 847562) and the Data Protection Officer in the Faculty of Medicine at the University of Oslo.
: The authors declare no competing interests.
: The authors declare no competing interests.
