@misc{indiciae07c8fee6cb66,
  title = {Butorphanol versus morphine: equally ineffective when given incorrectly.},
  year = {1989},
  doi = {10.1016/s0196-0644(89)80869-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2719377/},
  note = {Source identifier: 2719377}
}