@misc{indiciae3232be0be91d,
  title = {Left ventricular ejection fraction during cardiac surgery: a two-dimensional echocardiographic study.},
  author = {J M Dubroff and M B Clark and C Y Wong and A J Spotnitz and R H Collins and H M Spotnitz},
  year = {1983},
  doi = {10.1161/01.cir.68.1.95},
  url = {https://pubmed.ncbi.nlm.nih.gov/6602009/},
  note = {Source identifier: 6602009}
}