M. K. Barkovskaya
E.I. Chazov national medical research center of cardiology; A.l. Myasnikov institute of clinical cardiology
Russian Federation

Marianna K. Barkovskaya, postgraduate student, department of pulmonary hypertension and heart disease

V. V. Kushnir
E.I. Chazov national medical research center of cardiology; A.l. Myasnikov institute of clinical cardiology
Russian Federation

Vera V. Kushnir, Cand. Of Sci (Med.), Researcher, Department of Ultrasound diagnostic methods

Z. S. Valieva
E.I. Chazov national medical research center of cardiology; A.l. Myasnikov institute of clinical cardiology
Russian Federation

Zarina S. Valieva, Dr. of Sci. (Med.), Leading Research Fellow, Department of Pulmonary Hypertension and Heart Diseases

T. V. Martynyuk
E.I. Chazov national medical research center of cardiology; A.l. Myasnikov institute of clinical cardiology
Russian Federation

Tamila V. Martynyuk, Dr. of Sci. (Med.), Head of the Department of pulmonary hypertension and heart diseases