Dobrev, Hristo Petrov http://orcid.org/0000-0002-5513-3789
Abadjieva, Tsvetana Ivanova
Aleksiev, Teodor Ivanov
Ivanova, Zlatina Georgieva
Vutova, Nina Ivanova
Article History
Received: 18 December 2021
Accepted: 16 May 2022
First Online: 20 June 2022
Declarations
:
: H.P. Dobrev, T.I. Abadjieva, T.I. Aleksiev, Z.G. Ivanova, and N.I. Vutova declare that they have no competing interests.
: <i>Consent</i>: The examination of the patients was conducted according to the Declaration of Helsinki principles.