1. Department of Surgical Oncology, Xuzhou Central Hospital, Southeast University Cancer Institute, Xuzhou, Jiangsu 221009, P.R. China
2. Department of Radiology, Affiliated Hospital of Xuzhou Medical College, Xuzhou, Jiangsu 221006, P.R. China
3. Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors and Hubei Cancer Clinical Study Center, Wuhan, Hubei 430071, P.R. China