@misc{indiciaef41aba9b4a26,
  title = {CARDIAC NOISES.},
  author = {A R FEINSTEIN},
  year = {1963},
  doi = {10.1056/nejm196309192691218},
  url = {https://pubmed.ncbi.nlm.nih.gov/14044406/},
  note = {Source identifier: 14044406}
}