@misc{indiciae2cf3660307bc,
  title = {Unexpected problems with patient controlled analgesia.},
  author = {M Farmer and N J Harper},
  year = {1992},
  doi = {10.1136/bmj.304.6826.574-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/1559078/},
  note = {Source identifier: 1559078}
}