@misc{indiciae8c40eb800e7f,
  title = {A noncomputerized count-based technique for the determination of resting left ventricular ejection fraction.},
  author = {K H Gerber and R A Slutsky and K F Witztum and C B Higgins and W L Ashburn},
  year = {1982},
  doi = {10.1148/radiology.144.3.6285415},
  url = {https://pubmed.ncbi.nlm.nih.gov/6285415/},
  note = {Source identifier: 6285415}
}