N. S. Ryabin
Scientific Research Institute – Ochapovsky Regional Clinical Hospital no. 1, The Krasnodar Krai Ministry of Health
Russian Federation

Cand. of Sci. (Med.), endoscopist, Endoscopy department no. 2

350086, Krasnodar, 1st May str., 167

M. I. Bykov
Kuban State Medical University, Ministry of Health of the Russian Federation; Scientific Research Institute – Ochapovsky Regional Clinical Hospital no. 1, The Krasnodar Krai Ministry of Health
Russian Federation

Dr. of Sci. (Med.), professor of surgery department no. 1 ATF; head of endoscopy department no. 2

A. N. Katrych
Scientific Research Institute – Ochapovsky Regional Clinical Hospital no. 1, The Krasnodar Krai Ministry of Health
Russian Federation

Cand. of Sci. (Med.), head of Ultrasound Diagnostics department

V. V. Schava
Kuban State Medical University, Ministry of Health of the Russian Federation; Scientific Research Institute – Ochapovsky Regional Clinical Hospital no. 1, The Krasnodar Krai Ministry of Health department of surgery #1 for advanced training.
Russian Federation

Endoscopy department no. 2; post-graduate student, department of surgery no. 1 for advanced training