1. Department of Cardiology Department of Library and Department of Clinical Epidemiology Shengjing Hospital of China Medical University Shenyang China
2. School of Public Health Shanghai Jiao Tong University School of Medicine Shanghai China
3. College of Public Health Shanghai University of Medicine and Health Sciences Shanghai China
4. Department of Cardiology Shengjing Hospital of China Medical University Shenyang China
5. Institute of Chronic Disease Liaoning Provincial Center for Disease Control and Prevention Shenyang China