Ivanovsky, R. N.
Keppen, O. I.
Lebedeva, N. V.
Gruzdev, D. S.
Article History
Received: 9 July 2019
Revised: 27 October 2019
Accepted: 1 November 2019
First Online: 4 June 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.