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Authors
Strømmen, Magnus https://orcid.org/0000-0002-4686-0263
Dale, Ola https://orcid.org/0000-0001-9493-2658
Klöckner, Christian https://orcid.org/0000-0003-4510-1748
Tylleskär, Ida https://orcid.org/0000-0002-3220-1961
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Article History
Received: 15 July 2025
Revised: 6 February 2026
Accepted: 22 May 2026
First Online: 17 June 2026
Competing interests
: The authors declare no competing interests.
: All methods were performed in accordance with the relevant guidelines and regulations. The study was approved by the Regional Committee for Medical and Health Research Ethics, Central Norway (approval date: August 11, 2012; ref. no. 2012/1206). All participants received information about the study both in writing and orally, and provided written consent prior to participation.
