Abstract P4-15-12: Results from a randomized phase II study of the Dutch Breast Cancer Research Group (BOOG 2008-03): Concomitant trastuzumab, bevacizumab and paclitaxel (HAT) versus trastuzumab and bevacizumab, followed by trastuzumab, bevacizumab and paclitaxel (HA-HAT) a | InnScience