1. Department of Dermatology, Peking University First Hospital, Beijing, China.
2. National Clinical Research Center for Skin and Immune Diseases, Beijing, China.
3. Beijing Key Laboratory of Molecular Diagnosis on Dermatoses, Beijing, China.
4. Department of Eight-year Clinical Medical Education, Peking University Third Hospital, Beijing, China.
5. Department of Dermatology, Beijing Youan Hospital, Capital Medical University, Beijing, China.