@misc{indiciae6207b38da8b9,
  title = {Did Einthoven invent a string galvanometer?},
  author = {H B Burchell},
  year = {1987},
  doi = {10.1136/hrt.57.2.190},
  url = {https://pubmed.ncbi.nlm.nih.gov/3545272/},
  note = {Source identifier: 3545272}
}