A.M. ZAYNUTDINOV1,2, I.S. MALKOV1 1Kazan State Medical Academy, 36 Butlerov St., Kazan, Russian Federation, 420012 2Republican clinical hospital № 2, 1a Chekhov St., Kazan, Russian Federation, 420000 3Municipal Clinical Hospital № 7, 54 Chuykov St., Kazan, Russian Federation, 420103 Zaynutdinov A.M. — Cand. Med. Sc., Associate Professor of the Surgery Department, Head of Surgery Division, tel. […]