1. Department of Dermatology; Nanfang Hospital; Southern Medical University; Guangzhou Guangdong Provice China
2. Department of Dermatology; Dongguan Sixth People's Hospital; Dongguan Guangdong Provice China
3. Department of Dermatology; Guangdong No.2 Provincial People's Hospital; Guangzhou Guangdong Provice China
4. Department of Dermatology; Guangzhou Institute of Dermatology; Guangzhou Guangdong Provice China