R.R. YAKHIN1,2, L.E. SLAVIN1,2, A.G. PODSHIVALOV1, R.T. ZIMAGULOV1 1Interregional Clinical-Diagnostic Center, 12a Karbyshev Str., Kazan, Russian Federation, 420101 2Kazan State Medical Academy, 36 Butlerov Str., Kazan, Russian Federation, 420012  Yakhin R.R. ― postgraduate student of the Department of Endoscopy, General and Endoscopic Surgery, surgeon of the Surgical Department, tel.: (843) 291-10-65, +7-937-525-70-75, e-mail: [email protected] Slavin […]