A.K. RAMAZANOVA1, 2, D.I. ABDULGANIEVA2, I.G. MUSTAFIN2, A.K. ODINTSOVA1, B.R. RAMAZANOV2 1Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation 420012 2Republican Clinical Hospital of the Ministry of Healthcare of the Republic of Tatarstan, 138 Orenburgskiy Trakt, Kazan, Russian Federation 420064 Ramazanova A.Kh. — physician of the Department of Gastroenterology, postgraduate student of the Department […]