Khaspekov, L. G.
Article History
Received: 12 September 2018
Revised: 28 September 2018
Accepted: 1 October 2018
First Online: 17 September 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The author declares no conflict of interest.
: <i>Ethical approval.</i> This article does not contain any studies with human participants or animals performed by author.