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Authors
Markov, Miroslav
Dimova, Maria
Bogdanova, Simona
Chervenkov, Trifon
Georgiev, Tsvetoslav
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Article History
Received: 18 January 2026
Accepted: 25 March 2026
First Online: 2 April 2026
Declarations
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: The study was conducted in accordance with the principles of the Declaration of Helsinki. Ethical approval was obtained from the Ethics Committee of the Medical University of Varna (Protocol №133/22.06.2023). All participants were informed about the study objectives and procedures, and written informed consent was obtained prior to inclusion.
: Not applicable.
: The authors declare no competing interests.
