Gurevich, I. B.
Yashina, V. V.
Article History
Received: 21 April 2021
Revised: 21 April 2021
Accepted: 21 April 2021
First Online: 21 September 2021
COMPLIANCE WITH ETHICAL STANDARDS
: This article is a completely original work by its authors, has not been previously published, and will not be published in other publications.
: The authors declare no conflict of interest.