@misc{indiciae3b3fa6cc80ac,
  title = {Classification of headache disorders.},
  author = {Nabih M Ramadan and Jes Olesen},
  year = {2006},
  doi = {10.1055/s-2006-939915},
  url = {https://pubmed.ncbi.nlm.nih.gov/16628525/},
  note = {Source identifier: 16628525}
}