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 and Brigham and Women's Hospital; West Roxbury Massachusetts, USA
3. Department of Gastroenterology; The Affiliated First Hospital of Soochow University; Suzhou, Jiangsu Province China
4. Department of Gastroenterology; Nanjing Drum Tower Hospital Affiliated to Nanjing, University Medical School, Nanjing; Jiangsu Province China
5. Quality Care Medical Consulting, LLC; Lexington Massachusetts, USA