Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;
Division of Gastroenterology Union Hospital Tongji Medical College Huazhong University of Science and Technology Wu-han Hubei China;