@misc{indiciae51f73b06ba99,
  title = {[Cluster headache].},
  author = {K Tervo and E Punnonen and T Tervo and T T Hillbom},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2649368/},
  note = {Source identifier: 2649368}
}