@misc{indiciae7ab571010104,
  title = {Echocardiographic evaluation of left ventricular function.},
  author = {A F Parisi and P F Moynihan and E D Folland},
  year = {1980},
  doi = {10.1016/s0025-7125(16)31625-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/6987470/},
  note = {Source identifier: 6987470}
}