1. The General Office of Stroke Prevention Project Committee, National Health Commission of the People's Republic of China, Beijing, China
2. Department of Neurosurgery, Beijing Xuanwu Hospital of Capital Medical University, Beijing, China
3. Department of Neurology, Shanghai Changhai Hospital, Shanghai, China
4. Department of Neurology, Jilin University First Hospital, Changchun, China
5. Department of Neurology, Peking Union Medical College Hospital, Beijing, China
6. Department of Neurology, Beijing Tiantan Hospital of Capital Medical University, Beijing, China
7. Department of Neurology, Fujian Medical University First Hospital, Fuzhou, China
8. Department of Neurology, Sun Yat-sen University First Hospital, Guangzhou, China
9. Department of Neurology, Affiliated Hospital of Guizhou Medical University, Guiyang, China
10. Department of Neurology, Henan Provincial People's Hospital, Zhengzhou, China
11. Department of Neurology, Zhengzhou University First Hospital, Zhengzhou, China
12. Department of Neurology, West China Hospital of Sichuan University, Chengdu, China
13. Department of Neurology, Nanjing Gulou Hospital, Nanjing, China
14. Department of Neurology, Chang Gung Hospital of Tsinghua University, Beijing, China
15. Department of Neurology, Zhejiang University Second Hospital, Hangzhou, China
16. Department of Neurology, Tianjin Huanhu Hospital, Tianjin, China
17. Department of Neurosurgery, Beijing Tiantan Hospital of Capital Medical University, Beijing, China
18. Institute of Radiation Medicine, China Academy of Medical Science & Peking Union Medical College, Tianjin, China
19. School of Public Health, Peking University, Beijing, China