1 Breast Cancer Unit, Kyoto University Hospital, Breast Surgery, Kyoto University Graduate School of Medicine, 54 Shogoin-Kawaracho, Sakyo-ku, Kyoto, 606-8507, Japan. toi@kuhp.kyoto-u.ac.jp.
2 Breast Oncology Center, Cancer Institute Hospital, Tokyo, Japan.
3 International Medical Center, Breast Oncology, Saitama Medical University, Saitama, Japan.
4 Division of Breast Surgical Oncology, Department of Surgery, Showa University, Tokyo, Japan.
5 Breast Center, Kantonsspital St. Gallen, St. Gallen, Switzerland.