1. Department of Dermatology Hamamatsu University School of Medicine 1‐20‐1 Handayama Higashi‐ku Hamamatsu 431‐3192 Japan
2. Section of Dermatology Shizuoka General Hospital 4‐27‐1 Kita‐Andou Aoi‐ku Shizuoka 420‐8527 Japan
3. Laboratory Medicine Hamamatsu University School of Medicine 1‐20‐1 Handayama Higashi‐ku Hamamatsu 431‐3192 Japan
4. Section of Dermatology Shimada Municipal Hospital 1200‐5 Noda Shimada 427‐8502 Japan