@misc{indiciae0970bb1b2e2e,
  title = {Willem Einthoven.},
  author = {R A Kyle and M A Shampo},
  year = {1977},
  doi = {10.1001/jama.237.19.2108},
  url = {https://pubmed.ncbi.nlm.nih.gov/323520/},
  note = {Source identifier: 323520}
}