S. G. Shapovalianz
Chair of Hospital Surgery №2 with Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University.
Russian Federation

Shapovalianz Sergey Georgievich – Doct. of Med. Sci., Professor, Head of Chair of Hospital Surgery №2 with Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University. 

For correspondence: 119415, Moscow, Lobachevskogo str., 42, Russian Federation.  Phone: 8-985-921-84-97. E-mail: sgs31@mail.ru

S. A. Budzinskiy
Chair of Hospital Surgery №2 with Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University; Moscow Clinical Hospital №31.
Russian Federation

Budzinskiy Stanislav Aleksandrovich – Cand. of Med. Sci., Senior Scientific Officer of Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University, Physician-endoscopist of Moscow City Hospital №31.

E. D. Fedorov
Chair of Hospital Surgery №2 with Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University; Moscow Clinical Hospital №31.
Russian Federation

Fedorov Evgeniy Dmitrievich – Doct. of Med. Sci., Сhief Scientific Officer of Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University, Physician-endoscopist of Moscow City Hospital №31.

D. V. Bakhtiozina
Chair of Hospital Surgery №2 with Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University.
Russian Federation

Bakhtiozina Daria Vadimovna – Scientific Officer of Laboratory of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University.