A.V. ANDREEV1, M.V. KRASNOV1, L.P. NIKITINA2  1I.N. Ulyanov Chuvash State University, Cheboksary 2Republican Children’s Clinical Hospital, Cheboksary  Contact details: Andreev A.V. — Assistant Lecturer of the Department of Children’s Diseases Address: 15 Moskovsky prospekt, Cheboksary, Russian Federation, 428000, tel.: +7-903-322-49-16, e-mail: 484916@mail.ru  The purpose — to analyze the Russian and foreign scientific literature on the […]

I.V. BARKHATOV1, N.A. BARKHATOVA2 1Regional Clinical Hospital No. 3, 287 Pobedy Ave., Chelyabinsk, Russian Federation, 454021 2South Ural State Medical University of the Ministry of Health of the Russian Federation, 64 Vorovskogo Str., Chelyabinsk, Russian Federation, 454092   Contact details: Barkhatov I.V. — Cand. Med. Sc., Head of the Endoscopy Department of the polyclinic, e-mail: knib2009@rambler.ru […]

I.V. BARKHATOV1, N.A. BARKHATOVА2 1Regional Clinical Hospital No. 3, 287 prospekt Pobedy, Chelyabinsk, Russian Federation, 454021 2South Ural State Medical University of the Russian Ministry of Health, 64 Vorovskogo Str., Chelyabinsk, Russian Federation, 454092 Contact: Barkhatov I.V. — Cand. Med. Sc., Head of Endoscopy Department of the polyclinic, tel. +7-902-860-25-09, e-mail: knib2009@rambler.ru Barkhatova N.A. — […]