@misc{indiciae08767d03e14b,
  title = {Solving the problems with patient controlled analgesia.},
  author = {M O'Connor and S Chadwick and C Black and C Curtis and P Warwick},
  year = {1992},
  doi = {10.1136/bmj.304.6834.1113},
  url = {https://pubmed.ncbi.nlm.nih.gov/1586829/},
  note = {Source identifier: 1586829}
}