@misc{indiciaea969efd58ab7,
  title = {Fixed performance oxygen masks: an evaluation.},
  author = {S L Hill and P K Barnes and T Hollway and R Tennant},
  year = {1984},
  doi = {10.1136/bmj.288.6426.1261},
  url = {https://pubmed.ncbi.nlm.nih.gov/6424819/},
  note = {Source identifier: 6424819}
}