Elderly patients with hormone receptor-positive HER2-negative metastatic breast cancer treated with CDK4/6 inhibitors in a multicentre cohort

Helena Pla, Eudald Felip, Verónica Obadia, Sonia Pernas, Gemma Viñas, Mireia Margelí, Roser Fort-Culillas, Sonia Del Barco, Nuria Sabaté, Eduard Fort, Clara Lezcano, Beatriz Cirauqui, Vanesa Quiroga, Agostina Stradella, Miguel Gil Gil, Anna Esteve^*, Sabela Recalde^*