Averina, O. V.
Kovtun, A. S.
Danilenko, V. N.
Article History
Received: 10 December 2019
Revised: 31 January 2020
Accepted: 4 February 2020
First Online: 9 October 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflict of interest</i>. The authors declare that they have no conflict of interest.
: <i>Statement of compliance with standards of research involving humans as subjects.</i> All procedures carried out in a study with the participation of people comply with the ethical standards of the institutional and/or national research ethics committee and the 1964 Helsinki Declaration and its subsequent changes or comparable standards of ethics.
: Informed voluntary consent was obtained from each of the participants in the study.