Hristova, Maria http://orcid.org/0000-0002-4526-147X
Kamenarska, Zornitsa http://orcid.org/0000-0003-0401-4189
Dzhebir, Gyulnas http://orcid.org/0000-0002-3209-4545
Nikolova, Svetla http://orcid.org/0000-0002-4685-4074
Hristova, Rozalia http://orcid.org/0000-0003-1923-3165
Mihova, Kalina http://orcid.org/0000-0001-5657-9443
Vinkov, Anton http://orcid.org/0000-0002-8923-3892
Georgiev, Tsvetoslav http://orcid.org/0000-0002-1652-4648
Pozharashka, Joana http://orcid.org/0000-0003-2481-4984
Kaneva, Radka http://orcid.org/0000-0002-1437-1393
Savov, Alexey http://orcid.org/0000-0002-5896-9354
Koundurdjiev, Atanas http://orcid.org/0000-0003-2223-7730
Dourmishev, Lyubomir http://orcid.org/0000-0001-8458-1241
Funding for this research was provided by:
Medical University-Sofia (D-67/2016)
Article History
Received: 18 June 2021
Accepted: 13 September 2021
First Online: 23 September 2021
Declarations
:
: No competing financial interests exist.
: All procedures performed in this study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study has been approved by the local ethics committee of Medical University-Sofia with protocol number 9/25.04.2016.