@misc{indiciae5a967cdf4ad5,
  title = {Pulse oximetry--another problem.},
  author = {L F Marks and P J Heath},
  year = {1990},
  doi = {10.1111/j.1365-2044.1990.tb14766.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/2337228/},
  note = {Source identifier: 2337228}
}