1 Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China.
2 Department of Dermatology, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong, China. ymfan1963@163.com.
3 Dermatology, Plastic and Cosmetic Surgery Center, First Dongguan Affiliated Hospital of Guangdong Medical University, 42 Jiaoping Road, Tangxia Town, Dongguan, 523710, Guangdong, China. ymfan1963@163.com.