1. Department of Gastroenterology and Hepatology, The First Medical Center Chinese PLA General Hospital Beijing China
2. State Key Laboratory for Oncogenes and Related Genes, Key Laboratory of Gastroenterology & Hepatology, Ministry of Health, Division of Gastroenterology and Hepatology Shanghai Cancer Institute, Shanghai Institute of Digestive Disease, Renji Hospital, School of Medicine, Shanghai Jiao Tong University Shanghai China
3. Department of Gastroenterology, Sir Run Run Shaw Hospital Zhejiang University School of Medicine Hangzhou Zhejiang Province China
4. Department of Gastroenterology Zhongshan Hospital, Fudan University Shanghai China
5. Department of Gastroenterology The First Affiliated Hospital of Harbin Medical University Harbin Heilongjiang Province China
6. Department of Gastroenterology Ruijin Hospital, Shanghai Jiao Tong University School of Medicine Shanghai China