1. Department of Dermatology; Nanfang Hospital; South Medical University; Guangzhou Guangdong China
2. Department of Dermatology; Dongguan No. 6 People's Hospital; Guangzhou Guangdong China
3. Guangzhou Institute of Dermatology; Guangzhou China
4. Institute of Dermatology; Guangzhou Medical University; Guangzhou Guangdong China
5. Department of Dermatology; Guangdong No. 2 Provincial People's Hospital; Guangzhou Guangdong China