@misc{indiciaecfda60ca5601,
  title = {Evolution of the exercise electrocardiogram.},
  author = {P Kligfield and P M Okin},
  year = {1994},
  doi = {10.1016/0002-9149(94)90183-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/8203340/},
  note = {Source identifier: 8203340}
}