@misc{indiciae553ced1109d2,
  title = {Computer-assisted method for performing impedance cardiography calculations.},
  author = {M A Frey},
  year = {1982},
  doi = {10.1152/jappl.1982.52.1.274},
  url = {https://pubmed.ncbi.nlm.nih.gov/7061275/},
  note = {Source identifier: 7061275}
}