Oral Paclitaxel and Encequidar (oPac+E) versus IV paclitaxel (IVPac) in the Treatment of Metastatic Breast Cancer (mBC) Patients (Study KX-ORAX-001): Progression Free Survival (PFS) and Overall Survival (OS) Updates - Umanzor, G; Rugo, H S; Barrios, F J (San Antonio Breast Cancer Symposium, 2020)