Naoki Oiso1, Masatomo Kimura2, Akira Kawada3. 1. Department of Dermatology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan. Electronic address: naoiso@med.kindai.ac.jp. 2. Department of Pathology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan. 3. Department of Dermatology, Kinki University Faculty of Medicine, Osaka-Sayama, Osaka, Japan.