@misc{indiciaebcef6cbdb01a,
  title = {Current concepts. Headache.},
  author = {V S Caviness and P O'Brien},
  year = {1980},
  doi = {10.1056/nejm198002213020806},
  url = {https://pubmed.ncbi.nlm.nih.gov/6986029/},
  note = {Source identifier: 6986029}
}