D. A. Dudukchyan
Russian University of Medicine (ROSUNIMED)
Russian Federation

Diana А. Dudukchyan, Resident Doctor, Department of Propaedeutics of Internal Diseases and Gastroenterology, 

4, Dolgorukovskaya St., Moscow, 127006

D. K. Sarkisyan
Peoples’ Friendship University of Russia named after Patrice Lumumba
Russian Federation

Diana К. Sarkisyan, Resident Doctor, Department of Dermatovenereology with  Cosmetology Course, 

6, Miklukho-Maklai St., Moscow, 117198

D. N. Andreev
Russian University of Medicine (ROSUNIMED)
Russian Federation

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

4, Dolgorukovskaya St., Moscow, 127006