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Authors
Kjeldgaard, Mikkel https://orcid.org/0000-0001-9622-0072
Schiøttz-Christensen, Berit
Thomsen, Janus Nikolaj Laust
Skovsgaard, Christian Volmar
Bjarkam, Carsten Reidies
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Funding
Funding for this research was provided by:
The Danish Rheumatism Association (R209-A7533)
Lundbeck Foundation Neurosurgical Scholarship (R377-2021-407)
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Article History
Received: 19 September 2025
Accepted: 11 November 2025
First Online: 1 December 2025
Declarations
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: The study was approved (case no. 2023–000206) by the Scientific Ethics Committee of the North Denmark Region.
: This study was conducted using data from national registries, which operate under strict regulations for data protection and privacy. According to national laws and ethical guidelines, informed consent from individual participants is not required for registry-based studies.
: The authors declare no competing interests.
