@article{ali_hafeez_nisar_fatima_ghous_rehman_2022,  title={Role of preoperative erythropoietin in the optimization of preoperative anemia among surgical patients — A systematic review and meta-analysis},  volume={44},  ISSN={2531-1379},  url={https://doi.org/10.1016/j.htct.2020.12.006},  DOI={10.1016/j.htct.2020.12.006},  number={1},  journal={Hematology, Transfusion and Cell Therapy},  publisher={Associação Brasileira de Hematologia, Hemoterapia e Terapia Celular (ABHH)},  author={Ali, Sheikh Muhammad Ebad and Hafeez, Muhammad Hassan and Nisar, Omar and Fatima, Sarosh and Ghous, Humaira and Rehman, Mahwish},  year={2022},  month={Jan},  pages={76–84} }