@misc{indiciae613b09e087ac,
  title = {Exercise testing.},
  author = {P I Hershberg},
  year = {1971},
  doi = {10.1001/jama.1971.03190160094027},
  url = {https://pubmed.ncbi.nlm.nih.gov/5109873/},
  note = {Source identifier: 5109873}
}