@misc{indiciae5f1d6ec91c4d,
  title = {New headache classification.},
  author = {R B Daroff},
  year = {1989},
  doi = {10.1016/0090-3019(89)90321-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/2922647/},
  note = {Source identifier: 2922647}
}