A.V. TIMOSHENKOVA1, E.S. KATANOV1, I.N. ABYZOV2, V.V. VORONCHIKHIN2, S.A. ANYUROV2 1Chuvash State University named after I.N. Ulyanov, 15 Moskovskiy Pr., Cheboksary, Russian Federation, 428010 2Republican Clinical Hospital, 9 Moskovskiy Pr., Cheboksary, Russian Federation, 428010 Timoshenkova A.V. ― postgraduate student of the Surgery Department, tel. +7-917-671-35-68, e-mail: сolorsit21@mail.ru Katanov E.S. ― D. Med. Sc., Professor of […]