Kirilochev, O. O.
Article History
Received: 8 September 2019
Revised: 11 December 2019
Accepted: 16 December 2019
First Online: 9 December 2020
COMPLIANCE WITH ETHICAL STANDARDS
: <i>Conflicts 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 performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Informed consent was obtained from all individual participants involved in the study.