@misc{indiciaece8349fee7e0,
  title = {Pre-emptive extradural analgesia.},
  author = {O H Wilder-Smith and A Borgeat and M Tramèr and D R Morel},
  year = {1992},
  doi = {10.1093/bja/69.6.663-c},
  url = {https://pubmed.ncbi.nlm.nih.gov/1467121/},
  note = {Source identifier: 1467121}
}