@misc{indiciaec24b700e01e3,
  title = {Willem Einthoven--the man. The string galvanometer electrocardiograph.},
  author = {I Ershler},
  year = {1988},
  doi = {10.1001/archinte.148.2.453},
  url = {https://pubmed.ncbi.nlm.nih.gov/3277566/},
  note = {Source identifier: 3277566}
}