G.T. ZAGIDULLINA, A.I. KURBANGALEEV Kazan State Medical University, 49 Butlerov St., Kazan, Russian Federation, 420012 Zagidullina G.T. — postgraduate student of the Department of Surgical Diseases № 1, tel. (843) 214-37-93, e-mail: [email protected] Kurbangaleev A.I. — Cand. Med. Sc., Associate Professor of the Department of Surgical Diseases № 1, tel. (843) 214-37-93, e-mail: [email protected] This […]