1 Department of Dermatology, Kagawa University Faculty of Medicine, Miki-cho, Kagawa, Japan.
2 Department of Dermatology, Kagawa University Faculty of Medicine, Miki-cho, Kagawa, Japan, Department of Dermatology, Kurume University School of Medicine, Kurume, Japan.
3 Department of Diagnostic Pathology, Kagawa University Faculty of Medicine, Miki-cho, Kagawa, Japana.