@misc{indiciae75101ba84142,
  title = {The pulse oximeter--an early warning device?},
  author = {R A Mason},
  year = {1987},
  doi = {10.1111/j.1365-2044.1987.tb05355.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/3631489/},
  note = {Source identifier: 3631489}
}