R.I. KHISAMUTDINOVA, Sh.V. TIMERBULATOV, R.B. SAGITOV Bashkir State Medical University, 3 Lenin Str., Ufa, Russian Federation, 450008 Khisamutdinova R.I. ― postgraduate student of the Department of Surgery with the course in endoscopy of Institute for Vocational Education, tel. (347) 255-44-17, e-mail: [email protected] Timerbulatov Sh.V. ― D. Med. Sc., Professor of the Department of Surgery with […]