1. Department of Surgery, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400010, P.R. China
2. Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, P.R. China
3. Department of Bioinformatics, Chongqing Medical University, Chongqing 400016, P.R. China