1 Dermatology, Plastic and Cosmetic Surgery Center, the First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China; Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China.
2 Dermatology, Plastic and Cosmetic Surgery Center, the First Dongguan Affiliated Hospital of Guangdong Medical University, Dongguan, China; Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, China. Electronic address: ymfan1963@163.com.