Hlinkina, T. V.
Kastsiuk, S. A.
Article History
Received: 26 April 2019
Revised: 10 June 2019
Accepted: 18 January 2020
First Online: 10 February 2020
COMPLIANCE WITH ETHICAL STANDARDS
: Conflict of interest. The authors declare that they have no conflict of interest.
: Statement of compliance with standards of research involving humans as subjects. All procedures performed in the study involving human participants were in accordance with the ethical standards of the institutional and/or national research ethics 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.