1. Department of General Surgery, The Second Affiliated Hospital of Soochow University, Suzhou, China
2. Department of General Surgery, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
3. Department of Gastroenterology, Wuxi People's Hospital Affiliated to Nanjing Medical University, Wuxi, China
4. Department of Pathology, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
5. Key Laboratory of Model Animal Research, Nanjing Medical University, Nanjing, China