@misc{indiciae85a9f70c27ed,
  title = {Opioids and respiration.},
  author = {M Yeadon and I Kitchen},
  year = {1989},
  doi = {10.1016/0301-0082(89)90033-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/2548229/},
  note = {Source identifier: 2548229}
}