Poliushkevich, L. O.
Gancheva, M. S.
Dodueva, I. E.
Lutova, L. A.
Article History
Received: 25 December 2018
Revised: 21 March 2019
Accepted: 26 March 2019
First Online: 16 March 2020
COMPLIANCE WITH ETHICAL STANDARDS
: This article does not contain any studies with human participants or animals performed by any of the authors. The authors declare that they have no conflict of interest.