Popova, A. N.
Vorotelyak, E. A.
Article History
Received: 7 March 2021
Revised: 25 March 2021
Accepted: 30 March 2021
First Online: 25 August 2021
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interests.
: This article does not contain a description of the research carried out by the authors with the participation of humans or the use of animals as objects.