Fedorov, V. N.
Koroleva, S. V.
Zubova, T. A.
Andreeva, L. A.
Myasoedov, N. F.
Article History
Received: 31 October 2019
Revised: 20 April 2020
Accepted: 21 May 2020
First Online: 16 December 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The authors declare no conflicts of interest.