1. Department of Breast Oncology, Aichi Cancer Center Hospital, Nagoya, Japan
2. Department of Breast and Endocrine Surgery, Okayama University Hospital, Okayama, Japan
3. Biostatistics Section, Department of Data Science, Center for Clinical Sciences, National Center for Global Health and Medicine, Tokyo, Japan
4. Department of Surgery, Japanese Red Cross Saitama Hospital, Saitama, Japan
5. Department of Surgery, Sagara Hospital, Kagoshima, Japan
6. Department of Medical Oncology, the Cancer Institute Hospital of the Japanese Foundation for Cancer Research, Tokyo, Japan
7. Department of Surgery, Aomori City Hospital, Aomori, Japan
8. Department of Breast Surgery, Shizuoka General Hospital, Shizuoka, Japan
9. Department of Breast Surgery, Kameda Medical Center, Kamogawa, Japan
10. Department of Breast and Endocrine Surgery, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan
11. Department of Breast Surgery, National Hospital Organization Hokkaido Cancer Center, Sapporo, Japan
12. Department of Breast Surgery, JCHO Kurume General Hospital, Kurume, Japan
13. Department of Breast and Endocrine Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
14. Department of Breast and Endocrine Surgery, Osaka International Cancer Institute, Osaka Japan
15. Department of Medical Oncology, Mie University Hospital, Tsu, Japan
16. Department of Breast and Endocrine Surgery, Graduate School of Medical Sciences, Kumamoto University, Kumamoto, Japan
17. Biostatistics Division, Clinical Research Support Center, The University of Tokyo Hospital, Tokyo, Japan
18. Department of Integrated Science and Engineering for Sustainable Society, Chuo University, Tokyo, Japan
19. Department of Breast and Medical Oncology, National Cancer Center Hospital East, Kashiwa, Japan