Georgiev, Radoslav
Ivanov, Ivan G. http://orcid.org/0000-0002-6826-2723
Ivanova, Petya
Tumbarski, Yulian
Kalaydzhiev, Hristo
Dincheva, Ivayla N.
Badjakov, Ilian K.
Chalova, Vesela I. http://orcid.org/0000-0001-5139-5389
Funding for this research was provided by:
Bulgarian National Science Fund (project № KП-06-H37/21)
Article History
Received: 23 July 2020
Accepted: 27 January 2021
First Online: 13 February 2021
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This article does not contain any studies with human or animal subjects.