1. Department of Dermatology, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
2. Department of Statistics, Drum Tower School of Clinical Medicine, Nanjing Medical University, Nanjing, Jiangsu, China
3. Department of Dermatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, Jiangsu, China