[1] Natl Canc Ctr, Dept Palliat Med, Tokyo, Japan
[2] Kansai Med Univ, Dept Breast Surg, Osaka, Japan
[3] Natl Canc Ctr, Dept Int Clin Dev, Tokyo, Japan
[4] Natl Canc Ctr, Japan Clin Oncol Grp JCOG Data Ctr, Tokyo, Japan
[5] Fukushima Med Univ, Dept Minimally Invas Surg & Med Oncol, Fukushima, Japan
[6] Okayama Univ Hosp, Dept Breast Surg, Okayama, Japan
[7] Okayama Univ Hosp, Dept Endocrine Surg, Okayama, Japan
[8] Kyorin Univ, Dept Med Oncol, Fac Med, Tokyo, Japan
[9] Shizuoka Canc Ctr, Clin Res Ctr, Dept Biostat, Shizuoka, Japan
[10] St Marianna Univ, Dept Radiat Oncol, Sch Med, Kawasaki, Japan
[11] Natl Canc Ctr, Inst Canc Control, Div Support Care Survivorship & Translat Res, Tokyo, Japan
[12] Tohoku Univ, Div Biostat, Grad Sch Med, Sendai, Japan
[13] Univ Hosp, Dept Adv Med, Nagoya, Japan
[14] Natl Canc Ctr, JCOG Data Ctr, Operat Off, Tokyo, Japan
[15] Kobe Univ Hosp, Dept Med Oncol & Hematol, Ctr Canc, Kobe, Japan