1. Center for Clinical Epidemiology and Evidence-based Medicine, Shenzhen Qianhai Shekou Free Zone Hospital, Shenzhen, China
2. School of Public Health, Zhenghzou University, Zhenghzou, China
3. School of Clinical Medicine, University of Cambridge, Cambridge, UK
4. School of Public Health, Sun Yat-Sen University, Guangzhou, China
5. School of Public Health, Shantou University, Shantou, China
6. Department of Biostatistics and Epidemiology, School of Public Health, Shenzhen University Health Science Center, Shenzhen, Guangdong, China