@misc{indiciaed38beb51b079,
  title = {Reproducibility of supine exercise testing.},
  author = {M Appel and D Blumfield},
  year = {1981},
  doi = {10.1161/01.cir.63.2.469},
  url = {https://pubmed.ncbi.nlm.nih.gov/7449071/},
  note = {Source identifier: 7449071}
}