1. Department of Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
2. Department of Pathology, Soochow University, Suzhou, China
3. Department of Pathology, The First Affiliated Hospital of Soochow University, Suzhou, China
4. Department of General Surgery, The Second Affiliated Hospital, Soochow University, Suzhou, China