Koreneva, T. G.
Sigareva, L. E.
Article History
Received: 19 September 2018
Revised: 29 November 2018
Accepted: 29 November 2018
First Online: 1 November 2019
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.