1. Department of Dermatology; Tohoku University Graduate School of Medicine; Tohoku University Hospital; 1-1 Seiryo-cho Aoba-ku Sendai Miyagi 980-8574 Japan
2. Department of Dermatology; The Jikei University School of Medicine; Tokyo Japan
3. Department of Dermatology; Institute of Biomedical Sciences; Tokushima University Graduate School; Tokushima Japan
4. Kyowa Hakko Kirin Co. Ltd; Tokyo Japan