1. Department of Dermatology Sapporo Medical University Sapporo Japan
2. Department of Dermatologic Oncology National Cancer Center Hospital Tokyo Japan
3. Department of Dermatologic Oncology Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
4. Department of Clinical Oncology Kyoto University Kyoto Japan
5. Department of Skin Oncology/Dermatology Saitama Medical University International Medical Center Saitama Japan
6. Department of Dermato-Oncology National Hospital Organization Kyushu Cancer Center Fukuoka Japan
7. Dermatology Division Shizuoka Cancer Center Shizuoka Japan
8. Department of Dermatology Shinshu University Nagano Japan
9. Department of Dermatology University of Tsukuba Tsukuba Japan
10. Department of Dermatology University of Tokyo Graduate School of Medicine Tokyo Japan
11. Department of Dermato-Oncology/Dermatology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
12. Department of Dermatology Niigata Cancer Center Niigata Japan
13. Department of Dermatology Toyama Prefectural Central Hospital Toyama Japan
14. Department of Dermatology Kyushu University Fukuoka Japan
15. Department of Plastic and Reconstructive Surgery, Faculty of Medicine and Graduate School of Medicine Hokkaido University Sapporo Japan
16. Department of Dermatology and Plastic Surgery Kumamoto University Kumamoto Japan