Gordeev, S. Yu.
Gordeeva, T. V.
Article History
Received: 11 July 2019
Revised: 19 October 2019
Accepted: 11 November 2019
First Online: 1 April 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The article does not contain any studies involving animals or people performed by any of the authors.
: <i>Conflicts of interest.</i> The authors declare that they have no conflict of interest.