[1] Univ Texas MD Anderson Canc Ctr Houston, Dept Breast Surg Oncol, Houston, TX 77030 USA
[2] Univ Texas MD Anderson Canc Ctr Houston, Dept Breast Med Oncol, Houston, TX USA
[3] Univ Texas MD Anderson Canc Ctr Houston, Dept Hlth Serv Res, Houston, TX USA
[4] UCLA, David Geffen Sch Med, Dept Surg, Div Surg Oncol, Los Angeles, CA 90095 USA