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Authors
Lau, Bjørn https://orcid.org/0000-0003-4378-9761
Fostervold, Knut Inge https://orcid.org/0000-0002-7330-9290
Bjørkelo, Brita https://orcid.org/0000-0001-7535-2076
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Funding
Funding for this research was provided by:
University of Oslo
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Article History
Received: 16 March 2026
Accepted: 11 August 2026
First Online: 29 August 2026
Declarations
Conflict of interest: The authors declare that they have no competing interests.
Ethical approval: The study protocol was approved by the Regional Committee for Medical and Health Research Ethics, South-East Norway (reference #2020/140335), the National Centre for Research Data (reference #439242), and by the National Police Directorate (Reference #201900307).
Informed consent: Electronic informed consent was obtained from all participants before participation.
