@misc{indiciae57dcee63af6a,
  title = {Letter: Simple oxygen-failure safety device.},
  author = {H T Davenport and B M Wright},
  year = {1974},
  doi = {10.1136/bmj.4.5941.407-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/4529648/},
  note = {Source identifier: 4529648}
}