@misc{indiciae3a6123d48819,
  title = {A vernier caliper for interpreting electrocardiograms.},
  author = {H R WAINERDI and J STEWART},
  year = {1950},
  doi = {10.1056/nejm195002092420605},
  url = {https://pubmed.ncbi.nlm.nih.gov/15403341/},
  note = {Source identifier: 15403341}
}