Khmelevtsova, L. E.
Sazykin, I. S.
Azhogina, T. N.
Sazykina, M. A.
Article History
Received: 7 October 2019
Revised: 6 December 2019
Accepted: 23 December 2019
First Online: 28 July 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The authors declare that they have no conflict of interest. This article does not contain any studies involving animals or human participants performed by any of the authors.