[1] Brigham & Womens Hosp, Dana Farber Brigham & Womens Canc Ctr, Breast Oncol Program, Div Breast Surg,Dept Surg, Boston, MA USA
[2] Univ Chicago, Dept Surg, 5841 S Maryland Ave, Chicago, IL 60637 USA
[3] Dana Farber Canc Inst, Survey & Data Management Core, Boston, MA 02115 USA
[4] Dana Farber Canc Inst, Dept Med Oncol, Boston, MA 02115 USA
[5] Dana Farber Brigham & Womens Canc Ctr, Div Breast Surg, Dept Surg, Breast Oncol Program,BWH, Boston, MA USA