[1] Univ Washington, Breast Oncol Grp, Oncol, Seattle, WA 98195 USA
[2] Seattle Canc Care Alliance, Seattle, WA USA
[3] Fred Hutchinson Canc Res Ctr, Div Clin Res, 1124 Columbia St, Seattle, WA 98104 USA
[4] Univ Washington, Div Med Oncol, Seattle, WA 98195 USA
[5] Amer Soc Clin Oncol, Alexandria, VA USA
[6] Amer Assoc Canc Res, Philadelphia, PA USA