@misc{indiciae295f50f1e02a,
  title = {Extradural opioids in labour.},
  author = {F Reynolds},
  year = {1989},
  doi = {10.1093/bja/63.3.251},
  url = {https://pubmed.ncbi.nlm.nih.gov/2679830/},
  note = {Source identifier: 2679830}
}