@misc{indiciae309e914de4de,
  title = {Pulse oximetry.},
  author = {J F Kelleher},
  year = {1989},
  doi = {10.1007/bf01618369},
  url = {https://pubmed.ncbi.nlm.nih.gov/2647912/},
  note = {Source identifier: 2647912}
}