@misc{indiciae3cc3585952f6,
  title = {Photoplethysmograph from a laser source.},
  author = {L G Lindberg and P A Oberg},
  year = {1992},
  doi = {10.1007/bf02457840},
  url = {https://pubmed.ncbi.nlm.nih.gov/1293451/},
  note = {Source identifier: 1293451}
}