@misc{indiciaeec032bfa142a,
  title = {Heart sounds.},
  author = {Katharine Treadway},
  year = {2006},
  doi = {10.1056/nejmp058202},
  url = {https://pubmed.ncbi.nlm.nih.gov/16540610/},
  note = {Source identifier: 16540610}
}