@misc{indiciaee1c5b2e35620,
  title = {Portable anaesthetic machine.},
  author = {K Anderson},
  year = {1973},
  doi = {10.1136/bmj.2.5869.775-b},
  url = {https://pubmed.ncbi.nlm.nih.gov/4718328/},
  note = {Source identifier: 4718328}
}