Clinically Meaningful Tumor Reduction Rates Vary by Prechemotherapy MRI Phenotype and Tumor Subtype in the I-SPY 1 TRIAL (CALGB 150007/150012; ACRIN 6657) Mukhtar, Rita A. , Yau, Christina , Rosen, Mark , Tandon, Vickram J. ... - - Ann. Surg. Oncol - 2013 Manuscript - Secondary - Primary - Breast - CALGB-150007