Vasin, M. V.
Article History
Received: 18 September 2019
Revised: 20 November 2019
Accepted: 20 November 2019
First Online: 16 January 2022
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest.</i> The author declares no conflict of interest.
: <i>Statement on the welfare of animals</i>. This article does not contain any studies involving animals.
: <i>Statement of compliance with standards of research involving humans as subjects</i>. This article does not contain any studies involving humans as subjects of research.