E. V. Ivanova
Department of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University; “Klinika K+31”
Russian Federation

MD, chief researcher, 1 ul. Ostrovitianova, Moscow 117997;

endoscopist, head of the Department of Endoscopy, 42-4 ul. Lobachevskogo, Moscow 119415

E. D. Fedorov
Department of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University; “Klinika K+31”
Russian Federation

MD, professor, chief researcher, 1 ul. Ostrovitianova, Moscow 117997;

head of the Department of Operative Endoscopy, SCH № 31; chief consultant for endoscopy, 42-4 ul. Lobachevskogo, Moscow 119415

E. V. Tikhomirova
Department of Surgical Gastroenterology and Endoscopy, Pirogov Russian National Research Medical University; Lomonosov Moscow State University
Russian Federation

endoscopist, gradient student, Department of General and Specialized Surgery, Faculty of Basic Medicine,

1 ul. Ostrovitianova, Moscow 117997;

27-1 Lomonosovskyi prospect, Moscow 119192

A. V. Avakimyan
“Klinika-A”
Russian Federation

PhD, endoscopist, gastroenterologist,

4 Platanovyi bul’var, Krasnodar 350089

N. S. Marenich
Morozov Pediatric City Clinical Hospital, Department of Health in Moscow
Russian Federation

PhD, gastroenterologist,

1-9 4th Dobrininskyi pereulok, Moscow 119049