@misc{indiciae56b021e38fa8,
  title = {Variability in cardiac output during exercise.},
  author = {J R McDonough and R A Danielson},
  year = {1974},
  doi = {10.1152/jappl.1974.37.4.579},
  url = {https://pubmed.ncbi.nlm.nih.gov/4416844/},
  note = {Source identifier: 4416844}
}