Efficacy and safety of pyrotinib and radiotherapy vs. pyrotinib-based therapy in patients with HER2+ breast cancer with brain metastasis: a retrospective cohort study - Chen, Jiaxin; Zhang, Huiqiang; Zhou, Jinmei; Wu, Zisheng; Wu, Xuexue; Zhang, Shaohua; Jiang, Zefei; Wang, Tao (Annals of Translational Medicine; Vol 10, No 22 (November 29, 2022): Annals of Translational Medicine, 2022)