@misc{indiciae3c114ba372db,
  title = {Sumatriptin vs dihydroergotamine: patient preference.},
  author = {P Tfelt-Hansen and T J Steiner},
  year = {2001},
  url = {https://pubmed.ncbi.nlm.nih.gov/11321860/},
  note = {Source identifier: 11321860}
}