1. Department of Pathology, Nanjing Drum Tower Hospital affiliated to Nanjing University Medical School Nanjing Jiangsu Province China
2. Department of Pathology and Laboratory Medicine Veterans Affairs Boston Healthcare System, Harvard Medical School/Brigham and Women's Hospital Boston Massachusetts USA
3. Department of Surgery St Vincent's Hospital Melbourne Victoria Australia
4. Department of Surgery Veterans Affairs Boston Healthcare System, Harvard Medical School/Brigham and Women's Hospital Boston Massachusetts USA
5. Department of Gastroenterology, Nanjing Drum Tower Hospital affiliated to Nanjing University Medical School Nanjing Jiangsu Province China