Kobzar, A. D.
Khristoforova, N. K.
Article History
Received: 29 January 2018
Revised: 14 May 2018
Accepted: 31 May 2018
First Online: 23 May 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.