1. Department of Intensive Care Unit Kailuan General Hospital Tangshan 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. Department of Neurology Beijing Tiantan Hospital Capital Medical University Beijing China
5. China National Clinical Research Center for Neurological Diseases Beijing Tiantan Hospital Capital Medical University Beijing China
6. Department of Clinical Epidemiology and Clinical Trial Capital Medical University Beijing China
7. School of Public Health The University of Sydney Sydney Australia
8. Department of Cardiology Kailuan General Hospital Tangshan China