@misc{indiciae5697ac5bec26,
  title = {Postdural puncture headache and extradural blood patch.},
  author = {S Harrod and J M Foster},
  year = {1993},
  doi = {10.1093/bja/71.5.775},
  url = {https://pubmed.ncbi.nlm.nih.gov/8251301/},
  note = {Source identifier: 8251301}
}