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