S. N. Mekhtiev
Pavlov First Saint Petersburg State Medical University; Expert Gastroenterology Center
Russian Federation

Dr. Sci. (Med.), Professor of the Department of Hospital Therapy with a Course of Allergology and Immunology named after Academician Chernorutsky, 6–8, Lev Tolstoy St., St Petersburg, 197022;

Chairman of the Hepatology Section of the St. Petersburg Society of General Practitioners named after S.P. Botkin; 

Head Physician, 16, Pionerskaya St., St Petersburg, 197110

O. A. Mekhtieva
Pavlov First Saint Petersburg State Medical University; Expert Gastroenterology Center
Russian Federation

Cand. Sci. (Med.), Associate Professor of the Department of Hospital Therapy with a Course of Allergology and Immunology by Academician Chernorutsky with a Clinic, 6–8, Lev Tolstoy St., St Petersburg, 197022;

Cardiologist, Gastroenterologist, General Practitioner, 16, Pionerskaya St., St Petersburg, 197110

Z. M. Ibragimova
Expert Gastroenterology Center
Russian Federation

General Practitioner, Gastroenterologist, Ultrasound Doctor, 

16, Pionerskaya St., St Petersburg, 197110

M. V. Ukhova
Expert Gastroenterology Center
Russian Federation

Therapist, Gastroenterologist, Endoscopist, 

16, Pionerskaya St., St Petersburg, 197110

A. V. Volnukhin
Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

Dr. Sci. (Med.), Professor of the Department of General Medical Practice of the Institute of Professional Education, 

6, Bldg. 1, B. Pirogovskaya St., Moscow, 119991