@misc{indiciae9a9f8a19fe7d,
  title = {Headache during pregnancy.},
  author = {F Maggioni and C Alessi and T Maggino and G Zanchin},
  year = {1997},
  doi = {10.1046/j.1468-2982.1997.1707765.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/9399007/},
  note = {Source identifier: 9399007}
}