@misc{indiciae4008be032e87,
  title = {Instruments for evaluating function of cardiac pacemakers.},
  author = {S Furman and B Parker and D J Escher and J B Schweldel},
  year = {1967},
  url = {https://pubmed.ncbi.nlm.nih.gov/6059987/},
  note = {Source identifier: 6059987}
}