Real-world effectiveness of CDK4/6i in first-line treatment of HR+/HER2− advanced/metastatic breast cancer: updated systematic review - Harbeck, Nadia; Brufsky, Adam; Rose, Chloe Grace; Korytowsky, Beata; Chen, Connie; Tantakoun, Krista; Jazexhi, Endri; Nguyen, Do Hoang Vien; Bartlett, Meaghan; Samjoo, Imtiaz A.; Pluard, Timothy (Frontiers in Oncology, 2025)