@misc{indiciaeea004e973185,
  title = {Life events and headache.},
  author = {G Invernizzi and C Gala and E Sacchetti},
  year = {1985},
  doi = {10.1177/03331024850050s245},
  url = {https://pubmed.ncbi.nlm.nih.gov/4016939/},
  note = {Source identifier: 4016939}
}