X-M Xiao1, H-X Xu1, C-R Li1, B-X Wang2. 1. Institute of Dermatology, Chinese Academy of Medical Sciences, 12 Jiangwangmiao Street, Nanjing, Jiangsu, 210042, China. 2. Institute of Dermatology, Chinese Academy of Medical Sciences, 12 Jiangwangmiao Street, Nanjing, Jiangsu, 210042, China. wangbx@ncstdlc.org.