1. Department of Neurology Peking Union Medical College Hospital Peking Union Medical College and Chinese Academy of Medical Sciences Beijing China
2. Neurological and Mental Health Division The George Institute for Global Health Faculty of Medicine University of New South Wales Sydney Australia
3. The George Institute for Global Health Peking University Health Science Center Beijing China
4. Disease Control and Prevention Office Dalian Municipal Central Hospital Liaoning China
5. Department of Epidemiology and Statistics Institute of Basic Medical Sciences Chinese Academy of Medical Sciences Beijing China
6. Stroke Control Project Committee The National Health Commission Beijing China