Polyak, Yu. M.
Demchuk, A. S.
Sharov, A. N.
Gubelit, Yu. I.
Berezina, N. A.
Article History
Received: 6 February 2020
Revised: 6 February 2020
Accepted: 6 February 2020
First Online: 1 June 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.