TI - Clinicopathological Characteristics of Patients with HR-Positive/HER2-Negative Metastatic Breast Cancer Experiencing Early Progression Within 6 Months of CDK4/6 Inhibitor Therapy PT - Journal Article DP - 2026 TA - EJMI PG - 433-440 VI - 10 IP - 3 AID - 269433 [doi] 4100 - https://dx.doi.org/10.14744/ejmi.269433 SO - EURASIAN JOURNAL OF MEDICIAL INVESTIGATION,2026 10(3): 433