Erst, A. A.
Yakubov, V. V.
Article History
Received: 22 November 2018
Revised: 19 December 2018
Accepted: 24 December 2018
First Online: 28 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.