1. Department of Skin Oncology/Dermatology Saitama Medical University International Medical Center Saitama Japan
2. Department of Dermatology Niigata Cancer Center Niigata Japan
3. Department of Dermato‐Oncology/Dermatology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
4. Department of Dermatology Shinshu University Matsumoto Japan
5. Department of Dermatologic Oncology National Hospital Organization Kyushu Cancer Center Fukuoka Japan
6. Dermatology Division Shizuoka Cancer Center Shizuoka Japan
7. Department of Dermatology Saitama Medical University Saitama Japan
8. Department of Dermatology Kyushu University Fukuoka Japan
9. Department of Dermatology Keio University Tokyo Japan
10. Department of Dermatology, Faculty of Medicine University of Tsukuba Tsukuba Japan
11. Department of Dermatology Saitama Cancer Center Saitama Japan
12. Department of Dermatology University of Tokyo Tokyo Japan
13. Department of Plastic and Reconstructive Surgery Hokkaido University Sapporo Japan
14. Department of Dermatologic Oncology National Cancer Center Hospital Tokyo Japan
15. Department of Dermatology Toyama Prefectural Central Hospital Toyama Japan
16. Department of Dermatologic Oncology Osaka International Cancer Institute Osaka Japan
17. Department of Dermatology Sapporo Medical University Hospital Sapporo Japan
18. Department of Dermatologic Oncology Tokyo Metropolitan Cancer and Infectious Diseases Center Komagome Hospital Tokyo Japan
19. Department of Dermatology Fukuoka University Fukuoka Japan
20. Department of Dermatology Asahikawa Medical University Asahikawa Japan
21. Department of Dermatology Nagoya University Nagoya Japan
22. Department of Dermatology Kyoto University Kyoto Japan
23. Department of Dermatology and Plastic Surgery, Faculty of Life Sciences Kumamoto University Kumamoto Japan