XiaoYun Lu1,2, Fang Cheng3, FengLi Xiao4,5. 1. Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, 230032, Anhui, China. 2. Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Science and Teaching Building, 81 Meishan Road, Hefei, 230032, Anhui, China. 3. Department of Dermatology, Second Hospital of Huangshi, Huangshi, 435002, Hubei, China. 4. Department of Dermatology of First Affiliated Hospital, and Institute of Dermatology, Anhui Medical University, Hefei, 230032, Anhui, China. xiaofengli@126.com. 5. Key Laboratory of Dermatology (Anhui Medical University), Ministry of Education, Science and Teaching Building, 81 Meishan Road, Hefei, 230032, Anhui, China. xiaofengli@126.com.