1. Department of Dermatology; Xinhua Hospital affiliated to Shanghai Jiaotong University School of Medicine; Shanghai China
2. Department of Dermatology; Xinan Hospital; The Third Military Medical University; Chongqing China
3. Department of Dermatology; The First Hospital of China Medical University; Shenyang China
4. Department of Dermatology and Allergy; University of Bonn; Bonn Germany