Sakharova, E. G.
Korneva, L. G.
Article History
Received: 30 March 2018
Revised: 24 December 2018
Accepted: 4 June 2019
First Online: 23 January 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.