@misc{indiciae0d4d85b5035b,
  title = {Ear lobe photoplethysmography.},
  author = {R M Stern},
  year = {1974},
  doi = {10.1111/j.1469-8986.1974.tb00824.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4810439/},
  note = {Source identifier: 4810439}
}