@article{kell2020,
  title={The Biology of Lactoferrin, an Iron-Binding Protein That Can Help Defend Against Viruses and Bacteria},
  author={Douglas B. Kell and Eugene L. Heyden and Etheresia Pretorius},
  year={2020},
  journal={Frontiers in Immunology},
  doi={10.3389/fimmu.2020.01221},
  url={https://doi.org/10.3389/fimmu.2020.01221}
}