I.M. SAYFUTDINOV, L.E. SLAVIN  Interregional Clinical-Diagnostic Center of the Ministry of Healthcare, 12a Karbyshev St., Kazan, Russian Federation, 420101 Sayfutdinov I.M. — Cand. Med. Sc., Head of Endoscopy Department, tel. +7-917-249-66-88, e-mail: [email protected] Slavin L.E. — D. Med. Sc., Professor, Chief specialist on Surgery, tel. +7-917-391-53-45, e-mail: [email protected] The article presents the results of 1028 […]