Trastuzumab Active Not Recruiting Phase 3 Trials for Estrogen Receptor Positive / Stage IIB Breast Cancer / Stage IIIC Breast Cancer AJCC v7 / Stage II Breast Cancer / Stage IIIB Breast Cancer AJCC v7 / Stage IIA Breast Cancer / Stage IIA Breast Cancer AJCC v6 and v7 / Stage IIIA Breast Cancer AJCC v7 / HER2/Neu Positive / Progesterone Receptor Positive / Stage IIIC Breast Cancer / Stage IIIB Breast Cancer / Stage IB Breast Cancer AJCC v7 / Stage IB Breast Cancer / Stage IIB Breast Cancer AJCC v6 and v7 / Stage IIIA Breast Cancer Treatment