1. Department of Gastroenterology, Jiangsu Taizhou People’s Hospital, Taizhou, Jiangsu, China
2. Department of Pathology, Jiangsu Taizhou People’s Hospital, Taizhou, Jiangsu, China
3. Department of Gastroenterology, Nanjing First Hospital, Nanjing Medical University, Nanjing, Jiangsu, China