@misc{indiciaed6a23abefad6,
  title = {Clarification on heart sound.},
  author = {Kenneth V Robb},
  year = {2004},
  doi = {10.1001/archinte.164.1.108-a},
  url = {https://pubmed.ncbi.nlm.nih.gov/14718335/},
  note = {Source identifier: 14718335}
}