@misc{indiciaede97cfc6b446,
  title = {Epidural morphine causes delayed and prolonged ventilatory depression.},
  author = {R L Knill and J L Clement and W R Thompson},
  year = {1981},
  doi = {10.1007/bf03007149},
  url = {https://pubmed.ncbi.nlm.nih.gov/6796241/},
  note = {Source identifier: 6796241}
}