@misc{indiciae21608e3b1d63,
  title = {Solving the problems with patient controlled analgesia.},
  author = {D Ball and K Holmes and S Ralph},
  year = {1992},
  doi = {10.1136/bmj.304.6834.1113-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/1586828/},
  note = {Source identifier: 1586828}
}