1. Department of Neurosurgery, Peking University Third Hospital, Beijing 100191, China
2. Beijing Neurosurgical Institute, Capital Medical University, Beijing 100070, China
3. Department of General Surgery, The Fourth Hospital of Hebei Medical University, Shijiazhuang 050011, China
4. State Key Laboratory of Molecular Oncology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China