N. V. Ageykina
MEDSI Krasnaya Presnya Clinical and Diagnostic Centre
Russian Federation

Natalia V. Ageykina  — Cand. Sci. (Med.), Head of the Department of Endoscopy, 

123242, Moscow, Krasnaya Presnya str., 16

E. D. Fedorov
Pirogov Russian National Research Medical University; Lomonosov Moscow State University
Russian Federation

Evgeny D. Fedorov — Dr. Sci. (Med.), Prof., Principal Researcher, Chair of Hospital Surgery No. 2 with Research Laboratory of Surgical Gastroenterology and Endoscopy,

119415, Moscow, Lobachevskogo str., 42

P. G. Malkov
Lomonosov Moscow State University
Russian Federation

Pavel G. Malkov — Dr. Sci. (Med.), Head of the Department of Clinical Pathology, Medical Research and Education Centre, 

119192, Moscow, Lomonosovskiy ave., 27, korp. 10

T. V. Nikolaychuk
MEDSI Krasnaya Presnya Clinical and Diagnostic Centre
Russian Federation

Tatyana V. Nikolaychuk — Physician (endoscopy), 

123242, Moscow, Krasnaya Presnya str., 16

N. A. Oleynikova
Lomonosov Moscow State University
Russian Federation

Nina A. Oleynikova — Cand. Sc. (Med.), Researcher, Department of Clinical Pathology, Medical Research and Education Centre, 

119192, Moscow, Lomonosovskiy ave., 27, korp. 10