1. Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, Beijing, People’s Republic of China
2. State Key Laboratory of Medical Molecular Biology, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, Beijing, People’s Republic of China
3. Department of Neurosurgery, Sanbo Brain Hospital, Capital Medical University, Beijing, People’s Republic of China
4. Department of Radiology, the Third Medical Centre, Chinese People’s Liberation Army General Hospital, Beijing, People’s Republic of China