1. Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China
2. Beijing Municipal Key Laboratory of Clinical Epidemiology, Beijing, China
3. Department of Neurology, Beijing Tiantan Hospital, Capital Medical University, Beijing, China
4. China National Clinical Research Center for Neurological Diseases, Beijing, China
5. Center of Stroke, Beijing Institute for Brain Disorders, Beijing, China
6. Beijing Key Laboratory of Translational Medicine for Cerebrovascular Disease, Beijing, China