@misc{indiciae9c78081a34dd,
  title = {Scintigraphic evaluation of left ventricular function.},
  author = {D Twieg and R W Parkey and J T Willerson},
  year = {1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/487375/},
  note = {Source identifier: 487375}
}