@misc{indiciae1eb2d1208936,
  title = {Acute nasal sinusitis.},
  author = {R E Ryan},
  year = {1974},
  doi = {10.1080/00325481.1974.11713851},
  url = {https://pubmed.ncbi.nlm.nih.gov/4850417/},
  note = {Source identifier: 4850417}
}