1. Molecular Medicine and Cancer Research Center, Chongqing Medical University, Chongqing 400016, China
2. Department of Clinical Medicine, Changde Vocational and Technical College, Changde, Hunan 415000, China
3. School of Medical Information, Chongqing Medical University, Chongqing 400016, China
4. Department of Radiotherapy, The First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China