@misc{indiciae902f0b097387,
  title = {Correction--echocardiography.},
  author = {R B Chaffee},
  year = {1991},
  doi = {10.1056/nejm199101103240219},
  url = {https://pubmed.ncbi.nlm.nih.gov/1984185/},
  note = {Source identifier: 1984185}
}