@misc{indiciae36d0b7f6b274,
  title = {Left ventricular ejection fraction measured with Doppler color flow mapping techniques.},
  author = {A R Bengur and A R Snider and R P Vermilion and J C Freeland},
  year = {1991},
  doi = {10.1016/0002-9149(91)90362-o},
  url = {https://pubmed.ncbi.nlm.nih.gov/1877485/},
  note = {Source identifier: 1877485}
}