A.G. KHASANOV1, F.F. BADRETDINOVA1, M.A. NURTDINOV1, M.B. GALIN2, R.Kh. SHAIKHINUROV2 1Bashkir State Medical University, 3 Lenin St., Ufa, Russian Federation, 450000 2City Clinical Hospital №8, 1 40 let Oktyabrya St., Ufa, Russian Federation, 450112  Khasanov A.G. — D. Med. Sc., Professor, Head of the Department of Surgical Diseases, tel. +7-927-310-01-06, e-mail: hasanovag@mail.ru Badretdinova F.F. — […]