V. V. Skvortsov
Volgograd State Medical University
Russian Federation

Vsevolod V. Skvortsov, Dr. Sci. (Med.), Professor of the Department of Internal Diseases 

1, Pavshikh Bortsov Square, Volgograd, 400131

A. V. Tumarenko
Volgograd State Medical University
Russian Federation

Aleksander V. Tumarenko, Cand. Sci. (Med.), Associate Professor, Department of Internal Medicine 

1, Pavshikh Bortsov Square, Volgograd, 400131

E. A. Malyakina
Peoples’ Friendship University of Russia
Russian Federation

Ellina A. Malyakina, Clinical Resident 

6, Miklukho-Maklai St., Moscow, 117198

G. I. Maljakin
Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

Georgiy I. Maljakin, Clinical Resident 

8, Bldg. 2, Trubetskaya St., Moscow, 119991