Concordance among gene expression-based predictors for ER-positive breast cancer treated with adjuvant tamoxifen - Prat, A. (Universitat Autònoma de Barcelona. Departament de Medicina) ; Parker, J. S. (University of North Carolina. Lineberger Comprehensive Cancer Center) ; Fan, C. (LUniversity of North Carolina. Lineberger Comprehensive Cancer Center) ; Cheang, M. C. U. (University of North Carolina. Lineberger Comprehensive Cancer Center) ; Miller, L. D. (Wake Forest School of Medicine. Department of Cancer Biology) ; Bergh, Jonas (Manchester University. Department of Medical Oncology) ; Chia, S. K. L. (British Columbia Cancer Agency) ; Bernard, P. S. (University of Utah Health Sciences Center. Department of Pathology) ; Nielsen, T. O. (University of British Columbia. Department of Pathology) ; Ellis, Matthew J (Siteman Cancer Center at Washington University. Department of Medicine) ; Carey, L. A. (University of North Carolina. Deparment of Medicine) ; Perou, Charles M. (University of North Carolina. Pathology & Laboratory Medicine)