1. Department of Hematology Beijing Tiantan Hospital Capital Medical University Beijing China
2. Department of Neurosurgery Xuanwu Hospital Capital Medical University Beijing China
3. Department of Orthopedics Affiliated Hospital of Hebei University of Engineering Handan China
4. Neuroimaging Center Beijing Tiantan Hospital Capital Medical University Beijing China
5. Department of Neurosurgery Beijing Tiantan Hospital Capital Medical University Beijing China