S.D. MAYANSKAYA1, A.A. GILMANOV2, A.A. KODIROV2, A.YU. TEREGULOV2, M.M. MANGUSHEVA1, E.I. MUKHITOVA3  1Kazan State Medical University, Kazan 2Republican Clinical Hospital, Kazan 3City Clinical Hospital No. 7, Kazan  Contact details: Mayanskaya S.D. — MD, Professor of the Department of Hospital Surgery Address: 49 Butlerov St., Kazan, Russian Federation, 420012, tel.: +7-905-316-99-66, e-mail: Smayanskaya@mail.ru  The article presents two […]