1 Department of Dermatology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang, Harbin, 150000, China.
2 Department of Dermatology, The Second Affiliated Hospital of Harbin Medical University, 246 Xuefu Road, Nangang, Harbin, 150000, China. baibingxue@hrbmu.edu.cn.