Estrogen Receptor and Progesterone Receptor As Predictive Biomarkers of Response to Endocrine Therapy: A Prospectively Powered Pathology Study in the Tamoxifen and Exemestane Adjuvant Multinational TrialJohn M.S. Bartlett, Daniel Rea, Tammy Robson et al.|Journal of Clinical Oncology|2011Cited by 199