Gerasimova, M. I.
Ananko, T. V.
Savitskaya, N. V.
Article History
Received: 23 April 2019
Revised: 4 June 2019
Accepted: 20 June 2019
First Online: 12 March 2020
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of Interest. The authors declare that they have no conflict of interests.