@misc{indiciae10f810fd20cc,
  title = {Mitral regurgitation.},
  author = {M Wong},
  year = {1980},
  doi = {10.1016/s0002-9149(80)80038-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/7355771/},
  note = {Source identifier: 7355771}
}