@misc{indiciae9bed3e21bcab,
  title = {Echocardiography: an overview.},
  author = {H Feigenbaum},
  year = {1983},
  doi = {10.1016/s0735-1097(83)80023-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/6826935/},
  note = {Source identifier: 6826935}
}