@misc{indiciae79edbe331ff6,
  title = {Anaesthetic contamination.},
  author = {A A Spence and R P Knill-Jones and D D Moir},
  year = {1973},
  doi = {10.1136/bmj.2.5859.174},
  url = {https://pubmed.ncbi.nlm.nih.gov/4699599/},
  note = {Source identifier: 4699599}
}