Letuta, U. G.
Binder, A. S.
Tikhonova, T. A.
Article History
Received: 9 September 2019
Revised: 20 December 2019
Accepted: 25 January 2020
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.