Vasilyeva, A. E.
Yanshina, D. D.
Karpova, G. G.
Malygin, A. A.
Article History
Received: 24 June 2019
Revised: 19 July 2019
Accepted: 22 July 2019
First Online: 16 January 2020
COMPLIANCE WITH ETHICAL STANDARDS
: The study was performed according to all ethical standards.
: The authors declare that they do not have a conflict of interest.