@misc{indiciaea552c4a02685,
  title = {Clinical exercise stress testing.},
  author = {L T Sheffield},
  year = {1980},
  doi = {10.1161/01.cir.61.5.1053},
  url = {https://pubmed.ncbi.nlm.nih.gov/6988101/},
  note = {Source identifier: 6988101}
}