Disease-Free Survival According to Degree of <i>HER2</i> Amplification for Patients Treated With Adjuvant Chemotherapy With or Without 1 Year of Trastuzumab: The HERA Trial
Purpose To determine whether (1) immunohistochemical (IHC) HER2 status (ie, 2+ or 3+), (2) degree of fluorescence in situ hybridization (FISH) amplification according to (2a) HE...