1. Department of General Surgery, First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
2. Department of General Surgery, Affiliated Tumor Hospital of Shanxi Medical University, Taiyuan, Shanxi 030013, P.R. China
3. Translational Medicine Research Center, Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China
4. Department of Pathology, First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030001, P.R. China