@article{zhang_zheng_2021,  title={Statistical analysis for efficacy of tirofiban combined with ozagrel in the treatment of progressive cerebral infarction patients out of thrombolytic therapy time window},  volume={76},  ISSN={1807-5932},  url={https://doi.org/10.6061/clinics/2021/e2728},  DOI={10.6061/clinics/2021/e2728},  journal={Clinics},  publisher={Faculdade de Medicina / USP},  author={Zhang, Huiying and Zheng, Lei},  year={2021},  pages={e2728} }