1. Department of Interventional Neuroradiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
2. Department of Neurology, Taizhou Central Hospital (Taizhou University Hospital), Zhejiang, China
3. China National Clinical Research Center for Neurological Disease, Beijing, China
4. Department of Neurology, Beijing Jiangong Hospital, Beijing, China
5. Department of Radiology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
6. Department of Radiology, Chinese PLA General Hospital, Beijing, China