1. Department of Epidemiology and Health Statistics, West China School of Public Health and West China Fourth Hospital, Sichuan University , Chengdu 610041 , China
2. Department of Microbiology Laboratory, Chengdu Municipal Center for Disease Control and Prevention , Chengdu 610031 , China
3. Department of Cardiology, West China Hospital, Sichuan University , Chengdu 610041 , China
4. Department of Epidemiology and Health Statistics, School of Public Health, Huazhong University of Science and Technology , Wuhan 430030 , China
5. Department of Epidemiology and Biostatistics, School of Public Health, Guangdong Pharmaceutical University , Guangzhou 510310 , China