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Authors
Sajjad, Muhammad Umar
Henriksen, Tore
Haugen, Guttorm
Michelsen, Trond M. https://orcid.org/0000-0001-9534-6255
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Funding
Funding for this research was provided by:
Helse Sør-Øst RHF (2018087)
University of Oslo
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Article History
Received: 10 July 2025
Accepted: 21 October 2025
First Online: 28 April 2026
Declarations
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: The authors declare no competing interests.
: This study was approved by both the Institutional Review Board and the Regional Committee for Medical and Health Research Ethics, Southern Norway (ethics reference: 13885 and 2419/2011).
: Written informed consent was obtained from all the participants before sampling.
: Not applicable.
