@misc{indiciaec367e6e0eace,
  title = {Electrocardiographic stress tolerance tests.},
  author = {E Simonson},
  year = {1970},
  doi = {10.1016/0033-0620(70)90003-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/4920942/},
  note = {Source identifier: 4920942}
}