A.G. KHARITONOV1, O.B. SHCHUKINA1, V.Y. SOBKO2  1Northen-West state medical university named after I.I. Mechnikov, Kirochnaya street, 41, Saint-Petersburg, Russian Federation, 191015 2Consultative and diagnostic centre with polyclinic, Morskoy prospect, 3, Saint-Petersburg, Russian Federation, 197110 Kharitonov Andrey — assistant of the department of gastroenterology and dietology, ph. (812) 235-10-93, e-mail: scipion@pochta.ru1 Shchukina Oksana — PhD, docent of the department of gastroenterology and […]