Xu He is the medical director of the Endoscopy Center. Xu, male, chief physician, director of digestive endoscopy center affiliated to Tongji University, director of gastroenterology, professor, doctoral supervisor, doctor of medicine. Zhou graduated from Shanghai Medical College of Fudan University. Doctor of surgery, internationally renowned expert in minimally invasive treatment of digestive endoscopy, director of the Endoscopy Center of Zhongshan Hospital affiliated to Fudan University.