1. Department of Gastroenterology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing, Jiangsu Province, China
2. Departments of Gastroenterology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, Wuxi, Jiangsu Province, China
3. Department of Internal Medicine, Massachusetts General Hospital, Boston, MA, USA
4. Departments of Gastroenterology, Wuxi People’s Hospital Affiliated to Nanjing Medical University, 299 Qingyang Road, Wuxi, Jiangsu Province 214023, China
5. Department of Gastroenterology, Nanjing Drum Tower Hospital, Affiliated Hospital of Medical School, Nanjing University, 321 Zhongshan Road, Nanjing, Jiangsu Province 210008, China
6. Department of Pathology, Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA