1. Department of Skin Oncology/Dermatology Saitama Medical University International Medical Center Saitama Japan
2. Department of Dermatology University of Fukui Fukui Japan
3. Department of Geriatric and Environmental Dermatology Nagoya City University Graduate School of Medical Sciences Nagoya Japan
4. Department of Dermato‐Oncology/Dermatology National Hospital Organization Kagoshima Medical Center Kagoshima Japan
5. Department of Dermatology Shiga University of Medical Science Otsu Japan
6. Department of Dermatology Gunma University Graduate School of Medicine Maebashi Japan
7. Department of Dermatology Kyoto Prefectural University of Medicine Kyoto Japan
8. Department of Dermatology Saitama Cancer Center Saitama Japan
9. Department of Dermatology Fukui‐ken Saiseikai Hospital Fukui Japan
10. Department of Dermatology Kimitsu Chuo Hospital Kisarazu Japan
11. Department of Dermatology Asahikawa Medical University Hokkaido Japan
12. Community Health Science Center Saitama Medical University Saitama Japan
13. Medical Research Support Center University of Fukui Hospital Fukui Japan
14. Research Promotion Office Shinseikai Toyama Hospital Toyama Japan