@misc{indiciaea7dd62135a93,
  title = {Handy heart sound simulator.},
  author = {J N Sanderson},
  year = {1975},
  doi = {10.1016/0002-9149(75)90084-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/1199949/},
  note = {Source identifier: 1199949}
}