Affiliation: | 1.Department of Dermatology, Peking University First Hospital; Beijing Key Laboratory of Molecular Diagnosis on Dermatoses; National Clinical Research Center for Skin and Immune Diseases, Beijing 100034, China;2.Division of Dermatology, Department of Medicine, University of Toronto, Toronto, Ontario, Canada;3.Department of Biomedical Statistics, Peking University First Hospital, Beijing 100034, China. |