@misc{indiciaef56db5ee0764,
  title = {Whither electrocardiography?},
  author = {J S Butterworth and E Glassman},
  year = {1973},
  doi = {10.1016/0002-8703(73)90352-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/4743338/},
  note = {Source identifier: 4743338}
}