The visits of our Swiss colleagues to various services and departments of "Arabkir" MC continue. Last week, Professor Christian Breger, a renowned gastroenterologist, nutritionist, who previously headed the Gastroenterology and Nutrition service at the University Children's Hospital of Zurich, was the honored guest of the Gastroenterology and Endoscopy services.    During his visit, the professor conducted a workshop focused on endoscopic examinations of children, including gastroscopy and colonoscopy, as well as modern approaches to interpretation. Gastroenterologist-endoscopist Ani Hovnanyan performed 22 examinations during those days in the direct presence of the professor, benefitting from his advice and guidance throughout the procedures. Sona Martirosyan, was responsible for the anesthesia for the research. The gastroenterology service team, in collaboration with the general pediatric department, handled patient selection and preparatory work for these examinations.