Pshenichnov, A.
Article History
Received: 15 November 2017
Revised: 28 April 2018
Accepted: 4 June 2018
First Online: 8 October 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The author declares that he has no conflict of interest.
: <i>Statement of the welfare of animals.</i> This article does not contain any studies involving animals or human participants.