@misc{indiciaeb70dc19f9ecd,
  title = {Headache and heartache.},
  author = {W H Caskey and E L Spierings},
  year = {1978},
  doi = {10.1111/j.1526-4610.1978.hed1805240.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/721455/},
  note = {Source identifier: 721455}
}