@misc{indiciae3fc15bd3e64f,
  title = {Estrogens, progestins, and headache.},
  author = {S D Silberstein and G R Merriam},
  year = {1991},
  doi = {10.1212/wnl.41.6.786},
  url = {https://pubmed.ncbi.nlm.nih.gov/2046918/},
  note = {Source identifier: 2046918}
}