@misc{indiciae039d0a50eafe,
  title = {Abnormal apexcardiogram associated with rheumatic left ventricular dysfunction.},
  author = {A Benchimol and H Fleming and K B Desser},
  year = {1973},
  doi = {10.1378/chest.64.2.225},
  url = {https://pubmed.ncbi.nlm.nih.gov/4725079/},
  note = {Source identifier: 4725079}
}