1. Department of Dermatology, Guangdong Academy of Medical Sciences (Guangdong General Hospital), Guangzhou, Guangdong 510080, P.R. China
2. Department of General Internal Medicine, The First Affiliated Hospital of Sun Yat‑sen University, Guangzhou, Guangdong 510080, P.R. China
3. Research Center of Intelligent Transportation System, School of Engineering, Sun Yat‑sen University, Guangzhou, Guangdong 510275, P.R. China