1. Department of Gastroenterology, Changhai Hospital, The Second Military Medical University, Shanghai, China
2. Department of Surgery, Jinling Hospital, Nanjing, China
3. Digestive Endoscopy Center, Changhai Hospital, The Second Military Medical University, Shanghai, China
4. Department of Gastroenterology, Zhongda Hospital, Southeast University, Nanjing, China
5. Department of Gastroenterology, Air Force General Hospital, Beijing, China
6. Department of Traditional Chinese Medicine, Jiangdu Hospital, Yangzhou, China