1. 1.Dermatology Hospital of Southern Medical University, Guangzhou, China 2.Southern Medical University Institute for Global Health, Guangzhou, China 3.Guangdong Provincial Center for Skin Diseases and STIs control, Guangzhou, China 4. School of Public Health, Southern Medical University, Guangzhou, China
2. 1.Dermatology Hospital of Southern Medical University, Guangzhou, China 2.Southern Medical University Institute for Global Health, Guangzhou, China 3.Guangdong Provincial Center for Skin Diseases and STIs control, Guangzhou, China