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 Tiantan Hospital Capital Medical University Beijing China
5. Department of Cardiology, Kailuan Hospital North China University of Science and Technology Tangshan China