Cyclin-dependent kinase 4/6 inhibitors palbociclib or ribociclib combined with endocrine therapy and radiation therapy for patients with metastatic breast cancer. (October 2020) - Ratosa, I.; Scoccimarro, E.; Dominici, L.; Orazem, M.; Steinacher, M.; Aquilano, M.; Cerbai, C.; Desideri, I.; Marinko, T.; Livi, L.; Meattini, I.