Shapovalov, Yu. A.
Gladyshev, P. P.
Tuleukhanov, S. T.
Shvetsova, E. V.
Abdrasulova, Zh. T.
Article History
Received: 5 December 2019
Revised: 18 February 2020
Accepted: 25 May 2020
First Online: 19 October 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare no conflicts of interest. This work does not contain a description of any research using humans and animals as objects.