1 Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan. Electronic address: toco_my@cc.okayama-u.ac.jp.
2 Department of Dermatology, Kawasaki Medical School, Okayama, Japan.
3 Department of Dermatology, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan.
4 Division of Medical Support, Okayama University Hospital, Okayama, Japan.
5 Department of Dermatology, Kasugai Municipal Hospital, Aichi, Japan.
6 Department of Dermatology, Shizuoka City Shimizu Hospital.