title: Palbociclib: A New Option for Front-Line Treatment of Metastatic, Hormone Receptor-Positive, HER2-Negative Breast Cancer.
authors.affiliation: University of Arizona Cancer Center, Tucson, Arizona.
authors.forename: Harmony J
authors.initials: HJ
authors.lastname: Bowles
authors.affiliation: University of Arizona Cancer Center, Tucson, Arizona.
authors.forename: Kathryn L
authors.initials: KL
authors.lastname: Clarke