1. Department of Gastroenterology; The Affiliated Drum Tower Clinical Medical School, Nanjing Medical University; Nanjing Jiangsu Province China
2. Department of Pathology; The Affiliated Drum Tower Hospital of Nanjing University; Nanjing Jiangsu Province China
3. Department of Pathology and Laboratory Medicine; Veterans Affairs Boston Healthcare System and Harvard Medical School; West Roxbury Boston MA USA
4. Department of Rheumatology and Immunology; The Affiliated Children's Hospital, Zhejiang University School of Medicine; Hangzhou Zhejiang Province China
5. Department of Gastroenterology; The Affiliated Drum Tower Hospital of Nanjing University; Nanjing Jiangsu Province China
6. Department of Surgery; Veterans Affairs Boston Healthcare System and Harvard Medical School; West Roxbury Boston MA USA
7. Department of Gastroenterology; Veterans Affairs Boston Healthcare System and Harvard Medical School; West Roxbury Boston MA USA