@misc{indiciae8a0b54849b75,
  title = {Serial exercise testing in patients with effort angina: variable tolerance, fixed threshold.},
  author = {D D Waters and J L McCans and P A Crean},
  year = {1985},
  doi = {10.1016/s0735-1097(85)80302-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/4045025/},
  note = {Source identifier: 4045025}
}