@article{bai_lin_song_chang_han_fan_2021,  title={Incidence of central nervous system metastases in patients with human epidermal growth factor receptor 2-positive metastatic breast cancer treated with trastuzumab: A meta-analysis},  volume={76},  ISSN={1807-5932},  url={https://doi.org/10.6061/clinics/2021/e2653},  DOI={10.6061/clinics/2021/e2653},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Bai, Xue and Lin, Xue and Song, Jin and Chang, Jia-han and Han, Li-li and Fan, Cibo},  year={2021},  pages={e2653} }