Breast Cancer Survival Defined by the ER/PR/HER2 Subtypes and a Surrogate Classification according to Tumor Grade and Immunohistochemical Biomarkers.Parise CA, Caggiano V.J Cancer Epidemiol. 2014;2014:469251. doi: 10.1155/2014/469251. Epub 2014 May 26, Breast Journal, 2014 May 26