@article{uppal_saeed_tahir_uppal_khan_rahman_uppal_ozsahin_gilani_waheed_et al._2025,  title={Lymphopenia as a diagnostic biomarker in clinical COVID-19: insights from a comprehensive study on SARS-CoV-2 variants},  volume={85},  ISSN={1519-6984},  url={https://doi.org/10.1590/1519-6984.284362},  DOI={10.1590/1519-6984.284362},  journal={Brazilian Journal of Biology},  publisher={Instituto Internacional de Ecologia},  author={Uppal, R. and Saeed, U. and Tahir, R. and Uppal, M. R. and Khan, A. A. and Rahman, C. and Uppal, M. S. and Ozsahin, D. U. and Gilani, S. S. and Waheed, Y. and Piracha, Z. Z.},  year={2025},  pages={e284362} }