N. R. Kopteev
North-Western Regional Scientific and Clinical Center; St.Petersburg State University
Russian Federation

Nikita R. Kopteev — post-graduate student of St. Petersburg State University, surgeon of the 1st surgical department

Kultury Ave., 4, St. Petersburg, 194291, Russia

Universitetskaya nab., 7-9, St. Petersburg, 199034, Russia

T. S. Ovchinnikov
North-Western State Medical University named after I.I. Mechnikov”, Department of Hospital Surgery named after V.A. Oppel
Russian Federation

Timofey S. Ovchinnikov — Resident of the Department of Hospital Surgery named after V.A. Oppel

Piskarevsky Ave., 47, St. Petersburg, 195067, Russia

A. V. Lodygin
North-Western Regional Scientific and Clinical Center; St.Petersburg State University
Russian Federation

Alexander V. Lodygin — Candidate of Medical Sciences, Associate Professor of the Department of Faculty Surgery

Kultury Ave., 4, St. Petersburg, 194291, Russia

Universitetskaya nab., 7-9, St. Petersburg, 199034, Russia

A. A. Bogatikov
North-Western Regional Scientific and Clinical Center
Russian Federation

Alexander A. Bogatikov — Candidate of Medical Sciences, Deputy Chief Physician for Surgical Assistance

Kultury Ave., 4, St. Petersburg, 194291, Russia

V. A. Kashchenko
North-Western Regional Scientific and Clinical Center; St.Petersburg State University
Russian Federation

Viktor A. Kashchenko — Professor, Doctor of Medical Sciences, Deputy General Director for Research

Kultury Ave., 4, St. Petersburg, 194291, Russia

Universitetskaya nab., 7-9, St. Petersburg, 199034, Russia