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Authors
Grigorov, Rozen
Yambolov, Stefan
Georgiev, Svetoslav
Borisov, Ivaylo
Tsvetkov, Daniel
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Article History
Received: 28 November 2025
Accepted: 14 January 2026
First Online: 23 January 2026
Declarations
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: The study was approved by the Research Ethics Committee of the Medical University “Prof. Dr. Paraskev Stoyanov”–Varna (Decision No. 128/02.03.2023). The study was conducted in accordance with the principles of the Declaration of Helsinki. All participants provided written informed consent.
: Not applicable. The article does not contain individual patients’ names.
: The authors declare no competing interests.
