@misc{indiciaeca7f77b160e7,
  title = {Exercise testing in clinical medicine.},
  author = {S G Spiro},
  year = {1977},
  doi = {10.1016/0007-0971(77)90106-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/329851/},
  note = {Source identifier: 329851}
}