Shekhovtsov, S. V.
Shekhovtsova, I. N.
Peltek, S. E.
Article History
Received: 13 November 2018
Revised: 25 November 2018
Accepted: 28 November 2018
First Online: 27 January 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The authors declare that they have no conflict of interest.
: <i>Statement of animal welfare.</i> This article does not contain any studies involving animals performed by any of the authors.
: <i>Statement of compliance with standards of research involving humans as subjects.</i> This article does not contain any studies involving human participants performed by any of the authors.