V.V. KOMOK, S.A. BELYY, O.A. GRINENKO, A.S. NEMKOV First Saint Petersburg State Medical University named after acad. I.P. Pavlov of the Ministry of Health of the Russian Federation, 6-8 Lev Tolstoy St., St. Petersburg, Russian Federation, 197022 Komok V.V. — postgraduate student of the Department of departmental surgery, tel. +7-904-632-19-00, e-mail: vladimir_komok@mail.ru Belyy S.A. — […]