1 Department of Dermatology, Tokyo Metropolitan Police Hospital, Tokyo, Japan; Department of Dermatology, International University of Health and Welfare Hospital, Tochigi, Japan.
2 Department of Dermatology, International University of Health and Welfare Hospital, Tochigi, Japan.
3 Department of Diagnostic Pathology, International University of Health and Welfare Hospital, Tochigi, Japan.
4 Department of Dermatology, International University of Health and Welfare, Narita Hospital, Chiba, Japan.