I. V. Maev
A.I. Yevdokimov Moscow State University of Medicine and Dentistry
Russian Federation

Igor V. Maev – Dr. Sci. (Med.), Academician of the Russian Academy of Sciences, Professor, Head of the Department of Propaedeutics of Internal Diseases and Gastroenterology

127473, Moscow, Delegatskaya str., 20, bld. 1 

A. I. Levchenko
A.I. Yevdokimov Moscow State University of Medicine and Dentistry
Russian Federation

Anna I. Levchenko – assistant of the department of propaedeutics of internal diseases and gastroenterology 

127473, Moscow, Delegatskaya str., 20, bld. 1 

D. N. Andreev
A.I. Yevdokimov Moscow State University of Medicine and Dentistry
Russian Federation

Dmitry N. Andreev – Cand. Sci. (Med.), Associate Professor, Department of Propaedeutics of Internal Diseases and Gastroenterology 

127473, Moscow, Delegatskaya str., 20, bld. 1