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