1 Department of Hepatobiliary, Pancreatic and Splenic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010051, PR China.
2 Department of Orthopedic, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010051, PR China.
3 Department of Hepatobiliary, Pancreatic and Splenic Surgery, The Affiliated Hospital of Inner Mongolia Medical University, Huhhot, 010051, PR China. Electronic address: renjj.ok@163.com.
4 Key Laboratory of Molecular Pathology, Inner Mongolia Medical University, Huhhot, 010059, PR China. Electronic address: xiaorui79@hotmail.com.