Markovskaya, E. F.
Gulyaeva, E. N.
Article History
Received: 7 November 2018
Revised: 27 December 2018
Accepted: 28 January 2019
First Online: 16 March 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare no conflict of interests. This article does not contain any work conducted on animal or human participants.