@misc{indiciaeafdd88d21d1d,
  title = {Left ventricular volume during maximal supine exercise: a study using metallic epicardial markers.},
  author = {J H Caldwell and D K Stewart and H T Dodge and M Frimer and J W Kennedy},
  year = {1978},
  doi = {10.1161/01.cir.58.4.732},
  url = {https://pubmed.ncbi.nlm.nih.gov/688582/},
  note = {Source identifier: 688582}
}