@misc{indiciaeac4d99fdab88,
  title = {Geriatrics photo quiz. Einthoven's string galvanometer.},
  author = {J S Ross and J R Shua-Haim},
  year = {1998},
  url = {https://pubmed.ncbi.nlm.nih.gov/9484283/},
  note = {Source identifier: 9484283}
}