1 Department of Dermatology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
2 Department of Dermatology, Tenri Hospital, Tenri, Japan.
3 Department of Diagnostic Pathology, Kyoto University Graduate School of Medicine, Kyoto, Japan.
4 Agency for Science, Technology and Research (A*STAR), Singapore Immunology Network (SIgN) and Skin Research Institute of Singapore (SRIS), Singapore, Singapore.