1. Department of Neurosurgery, Beijing Tiantan Hospital, Capital Medical University, No. 119, South Four Ring West Road, Beijing 100070, China
2. The General Office of Stroke Prevention Project Committee, National Health Commission of the People’s Republic of China, Beijing, China
3. Institute of Radiation Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College, Tianjin, China
4. Department of Neurosurgery, Zhongnan Hospital of Wuhan University, Wuhan, China
5. Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing, China
6. Department of Interventional Radiology, Shanghai Tongji Hospital, Tongji University School of Medicine, Shanghai, China
7. The General Office of Stroke Prevention Project Committee, National Health Commission of the People’s Republic of China, No. 118, Guang’anmen Inner Street, Beijing 100053, China