@misc{indiciaec15a4b5c5976,
  title = {Ejection fractions.},
  author = {T P Graham},
  year = {1973},
  doi = {10.1016/0002-8703(73)90447-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4702677/},
  note = {Source identifier: 4702677}
}