@article{gursoy_avci_2022,  title={Effect of ABO blood groups on length of hospital stay according to age in Covid-19 patients},  volume={44},  ISSN={2531-1379},  url={https://doi.org/10.1016/j.htct.2021.08.013},  DOI={10.1016/j.htct.2021.08.013},  number={1},  journal={Hematology, Transfusion and Cell Therapy},  publisher={Associação Brasileira de Hematologia, Hemoterapia e Terapia Celular (ABHH)},  author={Gursoy, Vildan and Avci, Suna},  year={2022},  month={Jan},  pages={7–12} }