@misc{indiciae39a691ac48a2,
  title = {Cluster headache: an overview.},
  author = {K Ekbom},
  year = {1999},
  doi = {10.1007/pl00014986},
  url = {https://pubmed.ncbi.nlm.nih.gov/10662926/},
  note = {Source identifier: 10662926}
}