1 Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan.
2 Department of Dermatology, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
3 Department of Dermatology and Plastic Surgery, Faculty of Life Sciences, Kumamoto University, Kumamoto, Japan.
4 Division of Dermatology, Department of Internal Related, Kobe University Graduate School of Medicine, Kobe, Japan. Electronic address: chikako@med.kobe-u.ac.jp.