I would like to thank from the bottom of my heart the wonderful doctors of the Endoscopy department, the head of the department, Kirill V. Shishin, and Dr. Ivan A. Pavlov.
They did what the doctors in my city refused to do. I was told that in the ninth decade it is impossible. But for Shishin and Pavlov, it turned out to be quite possible. They carried out an operation, as a result of which no trace of the problem remained.
Thank you! May God grant you health and strength!