@misc{indiciaecc56ce4c86e5,
  title = {Oxygen therapy.},
  author = {J M Leigh},
  year = {1972},
  doi = {10.1136/bmj.4.5842.733-d},
  url = {https://pubmed.ncbi.nlm.nih.gov/4646861/},
  note = {Source identifier: 4646861}
}