@misc{indiciae54faefb1595a,
  title = {Combined spinal-extradural anaesthesia.},
  author = {D J Ferguson},
  year = {1992},
  doi = {10.1093/bja/68.4.450-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/1642927/},
  note = {Source identifier: 1642927}
}