1. Department of Dermatology, Beijing Chao-yang Hospital, Capital Medical University , Beijing 100020 , China
2. National Institute of Biological Sciences , Beijing 102206 , China
3. School of Basic Medical Sciences, Capital Medical University , Beijing 100069 , China
4. Tsinghua Institute of Multidisciplinary Biomedical Research, Tsinghua University , Beijing 100084 , China
5. Department of Dermatology, Peking University Third Hospital , Beijing 100191 , China