@misc{indiciae11eff35161d6,
  title = {Ambient light affects pulse oximeters.},
  author = {L Hanowell and J H Eisele and D Downs},
  year = {1987},
  doi = {10.1097/00000542-198711000-00057},
  url = {https://pubmed.ncbi.nlm.nih.gov/3674506/},
  note = {Source identifier: 3674506}
}