@misc{indiciae1caf974d3e2b,
  title = {Headache after spinal anaesthesia.},
  author = {J A Reid and J Thorburn},
  year = {1991},
  doi = {10.1093/bja/67.6.674},
  url = {https://pubmed.ncbi.nlm.nih.gov/1768536/},
  note = {Source identifier: 1768536}
}