1. Department of General Surgery, Department of Oncology, Department of Gastroenterology, and Medical Research Center, Xiangya Hospital, Central South University, Changsha, Hunan, China 410008, Department of Pathology, Tumor Hospital of Hunan Province, Changsha, Hunan, China 410006, and Faculty of Pharmacy, University of Manitoba, Winnipeg, Manitoba, Canada, R3T 2N2