1. Department of Dermatology, Tianjin Union Medical Center, Hongqiao District, Tianjin, China
2. Departments of Dermatologic Surgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu Province, China
3. Dermatopathology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu Province, China
4. Department of Dermatology, Xuecheng People’s Hospital, Zaozhuang, Shandong Province, China
5. Department of Dermatology, Linyi People’s Hospital, Linyi, Shandong Province, China
6. Department of Epidemiology, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing, Jiangsu Province, China