Begun, A. A.
Ryabushko, L. I.
Article History
Received: 20 August 2019
Revised: 19 December 2019
Accepted: 30 January 2020
First Online: 21 September 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.