A. V. Logatkina
Tula State University
Russian Federation

Logatkina Anna V. – therapist, postgraduate student

92, pr. Lenina, Tula, Russia, 300012

I. V. Terekhov
Tula State University
Russian Federation

Terekhov Igor V. – Cand. of Med. Sci., doctoral student

92, pr. Lenina, Tula, Russia, 300012

V. S. Nikiforov
North-Western State Medical University named after I. I. Mechnikov
Russian Federation

Nikiforov Viktor S. – Dr. med. Sci., Professor, Dean of the
Faculty of Medicine and Biology, Professor of the Department of
Functional Diagnostics

47, Piskarevskii str., Saint Petersburg, Russia, 195067