[1] Matsuyama Red Cross Hosp, Breast Surg, Matsuyama, Ehime, Japan
[2] Osaka Natl Hosp, Dept Surg Breast Oncol, Osaka, Japan
[3] Osaka Med Ctr Canc & Cardiovasc Dis, Dept Breast & Endocrine Surg, Osaka, Japan
[4] Shikoku Canc Ctr, Dept Breast Oncol, Matsuyama, Ehime, Japan
[5] Kitakyushu Municipal Med Ctr, Dept Surg, Kitakyushu, Fukuoka, Japan
[6] Canc Inst Hosp JFCR, Breast Med Oncol Dept, Tokyo, Japan
[7] Hiroshima City Hiroshima Citizens Hosp, Dept Breast Surg Hiroshima, Hiroshima, Japan
[8] Niigata Canc Ctr Hosp, Dept Breast Oncol, Niigata, Japan
[9] Fukushima Med Univ, Dept Med Oncol, Fukushima, Japan
[10] Kyushu Canc Ctr, Dept Breast Oncol, Fukuoka, Japan
[11] Showa Univ, Sch Med, Showa Univ Hosp, Dept Surg,Div Breast Surg Oncol, Tokyo 142, Japan
[12] Hirosaki Municipal Hosp, Dept Breast Surg, Hirosaki, Aomori, Japan
[13] Aichi Canc Ctr Hosp, Dept Breast Oncol, Nagoya, Aichi 464, Japan
[14] Gunma Prefectural Canc Ctr, Dept Breast Oncol, Ohta, Gunma, Japan
[15] Kyoto Univ, Dept Biomed Stat & Bioinformat, Grad Sch Med, Kyoto, Japan
[16] JCHO Kurume Gen Hosp, Dept Breast Surg, Kurume, Fukuoka, Japan
[17] Komagome Hosp, Dept Breast Surg, Tokyo Metropolitan Canc & Infect Dis Ctr, Tokyo, Japan
[18] Kumamoto Univ, Grad Sch Med Sci, Dept Breast & Endocrine Surg, Kumamoto, Japan
[19] Canc Inst Hosp JFCR, Breast Oncol Ctr, Tokyo, Japan
[20] Kyoto Univ, Dept Breast Surg, Grad Sch Med, Kyoto, Japan