@misc{indiciaed766e34f3dcf,
  title = {Headache.},
  author = {A P Friedman},
  year = {1973},
  doi = {10.1080/00325481.1973.11713467},
  url = {https://pubmed.ncbi.nlm.nih.gov/4701611/},
  note = {Source identifier: 4701611}
}