@misc{indiciae092e00a6fc17,
  title = {Headache classification.},
  author = {S H Landy and J McGinnis},
  year = {1994},
  doi = {10.1001/archfami.3.11.943b},
  url = {https://pubmed.ncbi.nlm.nih.gov/7804473/},
  note = {Source identifier: 7804473}
}