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Journal of Biomedical and Clinical Research 19: 183-197
doi: 10.3897/jbcr.e189851
Received: 25 Feb 2026 | Approved: 15 May 2026 | Published: 01 Jul 2026
This article is part of:
Journal of Biomedical and Clinical Research 19
Authors
Tsvetomir Stoyanov
ENT Clinic, UMHAT "Dr. G. Stranski" – Pleven, Medical University – Pleven, Pleven, Bulgaria
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Boris Duhlenski
ENT Clinic, UMHAT "Dr. G. Stranski" – Pleven, Medical University – Pleven, Pleven, Bulgaria
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Tsvetelin Mishev - Corresponding author
ENT Clinic, UMHAT "Dr. G. Stranski" – Pleven, Medical University – Pleven, Pleven, Bulgaria
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Milen Georgiev
Medical University – Pleven, Pleven, Bulgaria
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Academic editor
Paulina Trifonova Vladova
Medical University-Pleven, Pleven, Bulgaria
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Conflict of interest
The authors have declared that no competing interests exist.
This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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