@misc{indiciaeeb0e10fa0599,
  title = {Oxygen masks.},
  author = {J A BALL},
  year = {1963},
  doi = {10.1093/bja/35.6.368},
  url = {https://pubmed.ncbi.nlm.nih.gov/13966133/},
  note = {Source identifier: 13966133}
}