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Authors
Varadi, Imre
Toth, Tibor
Fejes, Eva
Nemeskeri, Zsolt
Kovacs, Miklos
Tibold, Antal
Nyulas, Rita
Feher, Gergely
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Funding
Funding for this research was provided by:
University of Pécs
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Article History
Received: 11 April 2025
Accepted: 3 July 2025
First Online: 9 July 2025
Declarations
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: The study protocol conforms to the ethical guidelines of the 1975 Declaration of Helsinki. The study was approved by the Ethics Committee of the University of Pécs and confirmed by the general and local management of the Hungarian Post Office (reference number: PTE/96773-2/2018). Participation was anonymous and voluntary. A written informed consent was obtained from all the participants before entering the study otherwise they were excluded.
: Not applicable.
: The authors declare no competing interests.
