@misc{indiciae9d6d3babcb46,
  title = {Flu strikes the hygiene hypothesis.},
  author = {Dale T Umetsu},
  year = {2004},
  doi = {10.1038/nm0304-232},
  url = {https://pubmed.ncbi.nlm.nih.gov/14991041/},
  note = {Source identifier: 14991041}
}