A. V. Popov
Volzhsky Polytechnic Institute, branch of Volgograd State Technical University
Russian Federation

Popov, Alexander V. – Senior Lecturer at the Department of Road Transport 

Volzhsky

U. M. Kaimakova
Volgograd State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Kaimakova, Ulyana M. – resident physician at the Department of Cardiology and Functional Diagnostics of Department of Continuous Medical Training 

Volgograd

N. P. Stetsky
Volgograd State Medical University of the Ministry of Health of the Russian Federation
Russian Federation

Stetsky, Nikolay P. – resident physician at the Department of Cardiology and Functional Diagnostics of Department of Continuous Medical Training 

Volgograd