Safonova, L. P.
Orlova, V. G.
Shkarubo, A. N.
Article History
Received: 8 January 2019
Revised: 22 February 2019
Accepted: 26 February 2019
First Online: 5 August 2019
COMPLIANCE WITH ETHICAL STANDARDS
: All procedures carried out in the study with the participation of human beings comply with the ethical standards of institutional and/or national research ethics committees and the 1964 Helsinki Declaration and its later amendments or comparable standards of ethics.
: The authors declare that they have no conflict of interest.