Outcomes of Older Women With Hormone Receptor–Positive, Human Epidermal Growth Factor Receptor–Negative Metastatic Breast Cancer Treated With a CDK4/6 Inhibitor and an Aromatase Inhibitor: An FDA Pooled AnalysisLynn Howie, Julia A. Beaver, Erik Bloomquist et al.|Journal of Clinical Oncology|2019Cited by 91