Real-World Experience among Elderly Metastatic Breast Cancer Patients Treated with CDK4/6 Inhibitor-Based Therapy. - O'Connor, Thomas N.; Schultz, Emily; Wang, Jianxin; O'Connor, Tracey; Levine, Ellis; Knudsen, Erik S.; Witkiewicz, Agnieszka K. (Cancers, 2024)