Grigoryeva, N. Yu.
Zaytseva, T. B.
Article History
Received: 5 December 2018
Revised: 22 July 2019
Accepted: 7 May 2020
First Online: 26 February 2021
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interests</i>. The authors declare that they have no conflicts of interest.
: <i>Statement on the welfare of humans or animals</i>. This article does not contain any studies involving animals performed by any of the authors.