1. Department of Dermatology, Drum Tower Clinical Medical College, Nanjing Medical University, Nanjing, Jiangsu 210008, P.R. China
2. Department of Dermatology, Nanjing University Medical School Affiliated Nanjing Drum Tower Hospital, Nanjing, Jiangsu 210008, P.R. China
3. Department of Dermatology, Jiangsu Province People's Hospital and Nanjing Medical University First Affiliated Hospital, Nanjing, Jiangsu 210029, P.R. China