@misc{indiciaeacef93234843,
  title = {Vasoatonic headache associated with chronic maxillary sinusitis.},
  author = {H L Williams},
  year = {1968},
  doi = {10.1001/archotol.1968.00770010097019},
  url = {https://pubmed.ncbi.nlm.nih.gov/4173390/},
  note = {Source identifier: 4173390}
}