1. Department of Gastroenterology, Suzhou Ninth People’s Hospital (Affiliated Wujiang Hospital of Nantong University), Suzhou, China
2. Department of Hematology, Suzhou Ninth People’s Hospital (Affiliated Wujiang Hospital of Nantong University), Suzhou, China
3. Department of Gastroenterology, the First Affiliated Hospital of Soochow University, Suzhou, China