A. M. Ananin
Pavlov University
Russian Federation

Andrey M. Ananin, cardiologist, Cardiology Department No. 2, Research Institute of Rheumatology and Allergology, National Clinical Research Center

6–8 L'va Tolstogo St., Saint Petersburg, 197022

E. A. Bruchkus
Pavlov University
Russian Federation

Elena A. Bruchkus, physician of the highest category, head of the Cardiology Department No. 2 of the Research Institute of Rheumatology and Allergology

Saint Petersburg

V. A. Ur’eva
Pavlov University
Russian Federation

Viktoria A. Yuryeva, resident physician, Cardiology Department No. 2, Research Institute of Rheumatology and Allergology, National Clinical Research Center

Saint Petersburg