1 Department of Dermatology and Venereology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.
2 Department of Dermatology and Venereology, Peking University First Hospital, Beijing, China; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China. Electronic address: yangwang_dr@bjmu.edu.cn.