1. Department of Dermatovenereology, Rare Disease Center, West China Hospital, Sichuan University, Chengdu, China
2. MRC Biostatistics Unit, University of Cambridge, Cambridge, United Kingdom
3. West China School of Public Health, Sichuan University, Chengdu, China
4. School of Atmospheric Sciences, Nanjing University of Information Science and Technology, Nanjing, China
5. Department of Geriatrics, Gansu Provincial Hospital, Lanzhou, China
6. School of Public Health, Sun Yat-sen University, Guangzhou, China