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Authors
Ueland, Rita
Rø, Øyvind
Danielsen, Yngvild S.
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Funding
Funding for this research was provided by:
University of Bergen
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Article History
Received: 7 March 2026
Accepted: 14 May 2026
First Online: 28 May 2026
Declarations
Ethics approval and consent to participate: The Regional Committee for Medical and Health Research Ethics, REC South East, Norway, has approved this study (ID: 703146). Participation in the national register NorSpis is voluntary for patients and all participants had received information about the register and signed an informed consent statement before their data were entered into the register.
Consent for publication: Not applicable.
Competing interests: The authors declare no competing interests.
