Gvozdeva, A. P.
Andreeva, I. G.
Article History
Received: 6 April 2019
Revised: 6 June 2019
Accepted: 24 June 2019
First Online: 5 February 2020
Compliance with Ethical Standards
: All experimental procedures with the involvement of human subjects as research objects met institutional and international ethical standards, as well as requirements of the Declaration of Helsinki of 1964 and its subsequent revisions. Each human participant gave his/her written informed consent to be involved in the experiments.