Frisman, E. Ya.
Zhdanova, O. L.
Neverova, G. P.
Article History
Received: 25 November 2019
Revised: 10 June 2020
Accepted: 16 June 2020
First Online: 10 December 2020
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interests . The authors declare that they have no conflicts of interest. Statement on the welfare of humans or animals . This article does not contain any studies involving animals performed by any of the authors.