[1] The University of Tokyo Hospital,Clinical Research Promotion Center
[2] Okayama University Hospital,Departments of Breast and Endocrine Surgery
[3] Tokyo Medical and Dental University,Department of Clinical Biostatistics, Graduate School of Medical and Dental Sciences
[4] The University of Tokyo,Department of Biostatistics and Bioinformatics, Interfaculty Initiative in Information Studies
[5] National Center for Global Health and Medicine,Department of Clinical Research
[6] National Cancer Center Hospital East,Department of Breast and Medical Oncology
[7] Kansai Medical University Hospital,Department of Breast Surgery
[8] Kawasaki Medical School,Department of Breast and Thyroid Surgery