N. I. Glushkov
North-Western State Medical University named after I. I. Mechnikov
Russian Federation

Nikolay I. Glushkov, D.M.Sc., Professor, head of the Department of General surgery

P. D. Puzdriak
North-Western State Medical University named after I. I. Mechnikov
Russian Federation

Petr D. Puzdriak, Post-graduate student, Department of
General surgery

A. N. Zvyagintseva
North-Western State Medical University named after I. I. Mechnikov
Russian Federation

Anastasia N. Zvyagintseva, student, medical faculty

Kirochnaya str., 41, Saint Petersburg, 191015

E. I. Panasyuk
Федеральное государственное бюджетное образовательное учреждение высшего образования «Северо-Западный государственный медицинский университет имени И. И. Мечникова» Министерства здравоохранения Российской Федерации
Russian Federation

Eleonora I. Panasyuk, Post-graduate student, Department of General surgery

M. A. Ivanov
North-Western State Medical University named after I. I. Mechnikov
Russian Federation

Michael A. Ivanov, D.M.Sc., Professor, Department of
General surgery