1. Department of Dermatology Kyushu University Maidashi 3‐1‐1 Higashiku Fukuoka 812‐8582 Japan
2. Department of Health Services Management and Policy Kyushu University Maidashi 3‐1‐1 Higashiku Fukuoka 812‐8582 Japan
3. Department of Dermatology Federation of National Public Service Personnel Mutual Aid Associations Hamanomachi Hospital Fukuoka Japan
4. Department of Dermatology Graduate School of Medicine Osaka University Osaka Japan
5. Department of Dermatology Faculty of Medicine University of Tokyo Tokyo Japan
6. Department of Dermatology Kyoto Prefectural University of Medicine Kyoto Japan
7. Department of Dermatology, Integrated Health Sciences Institute of Biomedical and Health Sciences Hiroshima University Hiroshima Japan
8. Department of Dermatology Shimane University Faculty of Medicine Shimane Japan
9. Department of Dermatology Nippon Medical School Tokyo Japan
10. Department of Geriatric and Environmental Dermatology Nagoya City University Graduate School of Medical Sciences Nagoya Japan
11. Department of Dermatology Tokyo Women's Medical University Tokyo Japan
12. Department of Dermatology Kanazawa Medical University Ishikawa Japan
13. Department of Dermatology University of Occupational and Environmental Health Kitakyushu Japan
14. Department of Dermatology Showa University School of Medicine Tokyo Japan
15. Department of Dermatology Graduate School of Medicine Kyoto University Kyoto Japan
16. Department of Dermatology Faculty of Medicine Fukuoka University Fukuoka Japan
17. Sapporo Skin Clinic Sapporo Japan
18. Department of Environmental Immuno‐Dermatology Yokohama City University Graduate School of Medicine Kanagawa Japan
19. UCLA Fielding School of Public Health Department of Community Health Sciences Los Angeles CAU.S.A