@misc{indiciaea1e07ee14145,
  title = {Postoperative pain relief using epidural morphine.},
  author = {J L Graham and R King and W McCaughey},
  year = {1980},
  doi = {10.1111/j.1365-2044.1980.tb03796.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/7386834/},
  note = {Source identifier: 7386834}
}