Mamykova, O. I.
Article History
Received: 3 July 2019
Revised: 20 August 2019
Accepted: 21 September 2019
First Online: 18 May 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare that they have no conflict of interest.
: <i>Statement of 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.