@misc{indiciae34fbeb625906,
  title = {Propranolol and cluster headache.},
  author = {R Fogelholm},
  year = {1972},
  doi = {10.1136/bmj.4.5832.110-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/5077446/},
  note = {Source identifier: 5077446}
}