Krupin, E. O.
Article History
Received: 5 February 2019
Revised: 25 February 2020
Accepted: 28 February 2020
First Online: 7 September 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests</i>. The authors declare that they have no conflict of interest.
: <i>Statement on welfare of animals</i>. All applicable international, national, and/or institutional guidelines for the care and use of animals were followed. The article does not concern any researches using animals as objects.