1. Division of Gastroenterology Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan China
2. Department of Gastroenterology Hubei University of Chinese Medicine Wuhan China
3. Department of Gastroenterology Wuhan University People's Hospital Wuhan China
4. Department of Gastroenterology Wuhan Red Cross Hospital Wuhan China
5. Department of Gastroenterology Tianyou Hospital Affiliated to Wuhan University of Science and Technology Wuhan China
6. Department of Gastroenterology Suizhou Central Hospital Wuhan China
7. Department of Gastroenterology Zhongnan Hospital of Wuhan University Wuhan China
8. Department of Gastroenterology Xianning Central Hospital Wuhan China
9. Department of Gastroenterology The Second Hospital of Huangshi Wuhan China
10. Department of Gastroenterology Wuhan Puai Hospital Wuhan China
11. Department of Gastroenterology Wenchang People's Hospital Hainan China