Mustafin, R. N.
Khusnutdinova, E. K.
Article History
Received: 8 March 2019
Revised: 14 May 2019
Accepted: 14 May 2019
First Online: 15 August 2019
Ethics
: <b>Conflict of interest.</b> The authors declare no conflict of interest in financial or any other sphere.
: <b>Ethical approval.</b> This article does not contain any studies with human participants or animals performed by any of the authors.