1. Department of Dermatology; The First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
2. Department of Dermatology; The Eastern Hospital of The First Affiliated Hospital; Sun Yat-sen University; Guangzhou China
3. Department of Dermatology; Affiliated Hospital of Guangdong Medical University; Zhanjiang China
4. Department of Dermatology; Maulana Azad Medical college and LNJP Hospital; New Delhi India