A. I. Stepanova
Central State Medical Academy of Department оf Presidential Affairs, Moscow
Russian Federation

Postgraduate student of the Department of Therapy, Cardiology and Functional Diagnostics with the Course of Nephrology 

N. F. Radova
Central State Medical Academy of Department оf Presidential Affairs, Moscow; Central Clinical Hospital with Out-patient Clinic of Department of Presidential Affairs, Moscow
Russian Federation

Physician of the Department of Functional Diagnostics of the Central Clinical Hospital of Department оf Presidential Affairs, Ph.D. 

M. N. Alekhin
Central State Medical Academy of Department оf Presidential Affairs, Moscow Central Clinical Hospital with Out-patient Clinic of Department of Presidential Affairs, Moscow
Russian Federation

Head of the Department of Functional Diagnostics of the Central Clinical Hospital of Department оf Presidential Affairs

Professor of the Department of Therapy, Cardiology and Functional Diagnostics with the Course of Nephrology of the Central State Medical Academy of Department оf Presidential Affairs; Doctor of Medical Sciences, Honored Doctor of the Russian Federation