1. Department of Breast and Endocrine Surgery Kumamoto University Hospital Kumamoto Japan
2. Department of Breast Oncology Aichi Cancer Center Hospital Nagoya Japan
3. Department of Breast and Endocrine Surgery Okayama University Hospital Okayama Japan
4. Department of Breast and Endocrine Surgery Nagoya University Graduate School of Medicine Nagoya Japan
5. Department of Breast Surgery National Hospital Organization Hokkaido Cancer Center Sapporo Japan
6. Department of Medical Oncology Osaka International Cancer Institute Osaka Japan
7. Department of Breast and Endocrine Surgery, Graduate School of Medicine Osaka University Osaka Japan
8. Breast Surgical Oncology, Breast Oncology Center The Cancer Institute Hospital of the JFCR Tokyo Japan
9. Department of Breast Surgery Nagoya City University Graduate School of Medical Sciences Nagoya Japan
10. Department of Breast and Endocrine Surgery Kanagawa Cancer Center Yokohama Japan
11. Department of Medical Oncology Toranomon Hospital Tokyo Japan
12. Breast Medical Oncology, Breast Oncology Center The Cancer Institute Hospital of JFCR Tokyo Japan
13. Department of Breast Surgery, Social Medical Corporation Hakuaikai Sagara Hospital Kagoshima Japan
14. Department of Breast Surgery Adachi Breast Clinic Kyoto Japan
15. Department of Surgery St. Marianna University School of Medicine Kawasaki Japan
16. Department of Breast Surgery Hirosaki Municipal Hospital Aomori Japan
17. Department of Breast and Medical Oncology National Cancer Center Hospital Tokyo Japan
18. Department of Medical Oncology Shimane University Hospital Izumo Japan
19. Department of Breast and Endocrine Surgical Oncology, Graduate School of Medicine Tohoku University Sendai Japan
20. Department of Breast Oncology National Hospital Organization Shikoku Cancer Center Matsuyama Japan
21. Department of Breast Oncology Gunma Prefectural Cancer Center Ota Japan
22. Department of Breast Oncology Tokai University Hospital Isehara Japan
23. Department of Medical Oncology Fukushima Medical University School of Medicine Fukushima Japan
24. Department of Biomedical Statistics and Bioinformatics Kyoto University Graduate School of Medicine Kyoto Japan
25. Department of Breast Surgery Kyoto University Graduate School of Medicine Kyoto Japan
26. Breast Oncology Center The Cancer Institute Hospital of the JFCR Tokyo Japan