@misc{indiciae29ace724a147,
  title = {Detecting abnormalities in left ventricular function during exercise before angina and ST-segment depression.},
  author = {M T Upton and S K Rerych and G E Newman and S Port and F R Cobb and R H Jones},
  year = {1980},
  doi = {10.1161/01.cir.62.2.341},
  url = {https://pubmed.ncbi.nlm.nih.gov/7397975/},
  note = {Source identifier: 7397975}
}