@misc{indiciae242431b57c5e,
  title = {Program for cardiac patients: stress testing and training.},
  author = {S L Lowenthal and R G McAllister},
  year = {1976},
  doi = {10.1093/ptj/56.10.1117},
  url = {https://pubmed.ncbi.nlm.nih.gov/967937/},
  note = {Source identifier: 967937}
}