Svistova, I. D.
Stakhurlova, L. D.
Article History
Received: 4 April 2018
Revised: 10 July 2018
Accepted: 30 August 2018
First Online: 10 June 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.