Shpanev, A. M.
Smuk, V. V.
Article History
Received: 17 February 2020
Revised: 5 March 2020
Accepted: 10 March 2020
First Online: 4 November 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.