@misc{indiciaebab0c4377f21,
  title = {Low-level exercise testing before and after coronary artery bypass surgery.},
  author = {D J Christopherson and M Shively and E S Sivarajan},
  year = {1984},
  doi = {10.1016/0020-7489(84)90017-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/6334662/},
  note = {Source identifier: 6334662}
}