Smirnov, N. G.
Kropacheva, Yu. E.
Zykov, S. V.
Article History
Received: 20 February 2019
Revised: 11 March 2019
Accepted: 11 March 2019
First Online: 22 February 2022
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interest. This paper does not contain any studies involving animals or human participants performed by any of the authors.