1 Division of Dermatology and Dermato-Allergology, Matsuda General Hospital, Ohno, Fukui, 912-0026, Japan.
2 Department of Dermatology, Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology, 67 Asahimachi, Kurume, Fukuoka, 830-0011, Japan.
3 Department of Dermatology, Fukui University, Fukui 23-3, Matsuoka-Shimoaizuki, Eiheiji, Yoshida, Fukui, 910-1193, Japan.