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Authors
Stoyanov, George S. https://orcid.org/0000-0002-6950-0615
Lyutfi, Emran https://orcid.org/0000-0001-5557-4982
Georgieva, Reneta
Georgiev, Radoslav
Dzhenkov, Deyan https://orcid.org/0000-0002-0731-3937
Petkova, Lilyana
Ivanov, Borislav D. https://orcid.org/0000-0002-0360-7751
Kaprelyan, Ara https://orcid.org/0000-0003-3929-7959
Ghenev, Peter
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Funding
Funding for this research was provided by:
Medical Iniversity - Varna (19010)
National scientific fund - young researchers (2990/07.06.2021)
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Article History
Received: 16 February 2022
Accepted: 24 March 2022
First Online: 5 April 2022
Declarations
:
: The authors declare no competing interests.
: All procedures included in the study adhered to the ethical standards of the Declaration of Helsinki 1964 and its seventh revision from 2013. The study was approved by the Committee on Ethics for Scientific Research, Medical University—Varna "Prof. Dr. Paraskev Stoyanov," —Protocol no. 93/21.05.2020.
: The authors declare no conflicting interests.
