@misc{indiciae926161fea25b,
  title = {Secondary headaches.},
  author = {Jack Gladstein},
  year = {2006},
  doi = {10.1007/s11916-006-0064-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/16945256/},
  note = {Source identifier: 16945256}
}