1. The Second School of Clinical Medicine Southern Medical University Guangzhou China
2. Department of Cardiology Guangdong Cardiovascular Institute Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou China
3. Department of Epidemiology and Biostatistics University at Albany School of Public Health State University of New York Rensselaer New York USA
4. Department of Epidemiology Guangdong Cardiovascular Institute Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences Guangzhou China