@misc{indiciae76572ceaa855,
  title = {Changing electrocardiographic technology.},
  author = {T M Blake},
  year = {1969},
  doi = {10.1097/00007611-196901000-00028},
  url = {https://pubmed.ncbi.nlm.nih.gov/5766426/},
  note = {Source identifier: 5766426}
}