Andreev, V. P.
Plakhotskaya, Zh. V.
Article History
Received: 6 April 2017
Revised: 19 June 2017
Accepted: 24 July 2017
First Online: 9 April 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.