@article{lan_zhou_feng_qiao_du_li_2021,  title={Association of tumor mutation burden and epidermal growth factor receptor inhibitor history with survival in patients with metastatic stage III/IV non-small-cell lung cancer: A retrospective study},  volume={76},  ISSN={1807-5932},  url={https://doi.org/10.6061/clinics/2021/e2251},  DOI={10.6061/clinics/2021/e2251},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Lan, Yan and Zhou, Shuo and Feng, Weihong and Qiao, Ying and Du, Xueming and Li, Fenge},  year={2021},  pages={e2251} }