| Affiliation: | 1. Department of Pathology, Nanjing Drum Tower Hospital, , Nanjing, Jiangsu Province, China;2. Department of Biostatistics, Nanjing Drum Tower Hospital, , Nanjing, Jiangsu Province, China;3. Department of Gastroenterology, Nanjing Drum Tower Hospital, , Nanjing, Jiangsu Province, China;4. Department of Medicine, Beth Israel Deaconess Medical Center, , Boston, USA;5. Department of Surgery, Veterans Affairs Boston Healthcare System and Harvard Medical School, , West Roxbury, MA, USA;6. Department of Gastroenterology, Veterans Affairs Boston Healthcare System and Harvard Medical School, , West Roxbury, MA, USA;7. Department of Pathology and Laboratory Medicine, Veterans Affairs Boston Healthcare System and Harvard Medical School, , West Roxbury, MA, USA |
