1. Graduate School, Inner Mongolia Medical University, Huhhot, P.R. China
2. Department of Hepatobiliary Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, P.R. China
3. Key Laboratory of Molecular Pathology, Inner Mongolia Medical University, Huhhot, P.R. China
4. Department of Radiology, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, P.R. China