Vorobjev, Yu. N.
Article History
Received: 2 April 2019
Revised: 19 September 2019
Accepted: 19 September 2019
First Online: 30 April 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests.</i> The author declares that he has no conflict of interest.
: This article does not contain any studies involving animals or humans as subjects performed by the author.