1. Division of Gastroenterology; Union Hospital, Tongji Medical College Huazhong University of Science and Technology; Wuhan China
2. Department of Infectious Diseases; Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
3. Department of Clinical Laboratory; Union Hospital, Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
4. Department of Clinical Laboratory; Zhongnan Hospital of Wuhan University; Wuhan China