“Selecting the Optimal Treatment Line for CDK4 6 Inhibitors in Hormone Receptor-Positive, HER2-Negative Breast Cancer”. Voprosy onkologii 72, no. 3 (July 3, 2026): OF-2455. Accessed October 13, 2026. https://voprosyonkologii.ru/index.php/journal/article/view/3-26-Selecting-the-Optimal-Treatment.