Naumenko, O. I.
Senchenkova, S. N.
Knirel, Yu. A.
Article History
Received: 29 May 2019
Revised: 1 July 2019
Accepted: 18 July 2019
First Online: 16 January 2020
COMPLIANCE WITH ETHICAL STANDARDS
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: The authors state that there is no conflict of interest.