@misc{indiciae7d8a9b88331a,
  title = {PRECORDIAL ELECTROCARDIOGRAPH STETHOSCOPE.},
  author = {R W BETHUNE},
  doi = {10.1097/00000542-196503000-00018},
  url = {https://pubmed.ncbi.nlm.nih.gov/14261063/},
  note = {Source identifier: 14261063}
}