Takuya Miyagawa1, Takafumi Kadono2, Miki Miyazaki1, Shinichi Sato1. 1. Department of Dermatology, University of Tokyo Graduate School of Medicine, 7-3-1, Hongo, Bunkyo-ku, Tokyo, 113-8655, Japan. 2. Department of Dermatology, St. Marianna University School of Medicine, 2-16-1, Sugao, Miyamae-ku, Kawasaki-shi, Kanagawa, 216-8511, Japan. tkadono-tky@umin.ac.jp.