Shakhmatova, O. A.
Kovardakov, S. A.
Article History
Received: 9 August 2018
Revised: 28 March 2019
Accepted: 30 May 2019
First Online: 10 February 2020
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.