[1] Natl Canc Ctr, Res Inst & Hosp, Goyang 410769, South Korea
[2] Inje Univ, Sanggye Paik Hosp, Dept Surg, Seoul, South Korea
[3] Cheil Gen Hosp, Dept Surg, Seoul, South Korea
[4] Womens Healthcare Ctr, Seoul, South Korea
[5] Univ Ulsan, Coll Med, Asan Med Ctr, Dept Surg, Seoul, South Korea
[6] Natl Canc Ctr, Ctr Breast Canc, Goyang 410769, South Korea
[7] Sungkyunkwan Univ, Sch Med, Kangbuk Samsung Hosp, Dept Surg, Seoul, South Korea
[8] Kangnam CHA Hosp, Dept Surg, Seoul, South Korea
[9] Ilsan Hosp, Dept Surg, Goyang, South Korea
[10] Kwandong Univ, Coll Med, Myongji Hosp, Dept Surg, Goyang, South Korea
[11] Chungnam Natl Univ Hosp, Dept Surg, Taejon, South Korea
[12] Sungkyunkwan Univ, Sch Med, Samsung Med Ctr, Div Hematol Oncol, Seoul, South Korea
[13] Yonsei Univ, Coll Med, Severance Hosp, Div Hematol Oncol, Seoul, South Korea
[14] Kangnam MizMedi Hosp, Dept Surg, Seoul, South Korea
[15] Catholic Univ, Korea Coll Med, Yeouido St Marys Hosp, Dept Surg, Seoul, South Korea
[16] Soonchunhyang Univ, Cheonan Hosp, Dept Surg, Cheonan, South Korea