Polishchuk, L. V.
Lukyanchuk, V. V.
Article History
Received: 18 March 2020
Revised: 26 October 2020
Accepted: 18 March 2021
First Online: 19 April 2021
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interests.
: This article contains no results of any studies involving humans or animals as their objects.