@misc{indiciaef6bf5f06d3e2,
  title = {Cluster headache. Recent developments in clinical characterization and pathogenesis.},
  author = {G C Manzoni and G Micieli and C Zanferrari and G Sandrini and P Bizzi and G Nappi},
  year = {1991},
  url = {https://pubmed.ncbi.nlm.nih.gov/1666810/},
  note = {Source identifier: 1666810}
}