Golubev, A. G.
Article History
Received: 3 August 2018
Revised: 3 August 2018
Accepted: 10 August 2018
First Online: 7 August 2019
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare that they have no conflict of interest. <i>Statement of the welfare of animals</i>. This article does not contain any studies involving animals or human participants performed by any of the authors.