1. Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou, China
2. Department of Epidemiology and Biostatistics, College for Public Health and Social Justice, Saint Louis University, Saint Louis, Missouri, USA
3. West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu, Sichuan, China
4. Department of Epidemiology and Biostatistics, College of Public Health, Zhengzhou University, Zhengzhou, China
5. Shenzhen University General Hospital, Shenzhen University Clinical Medical Academy, Shenzhen, China