@misc{indiciae2fdce4782969,
  title = {Extradural analgesia.},
  year = {1972},
  doi = {10.1111/j.1365-2044.1972.tb08209.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5021533/},
  note = {Source identifier: 5021533}
}