@misc{indiciae590fc28f4014,
  title = {Exercise after myocardial infarction.},
  author = {N Singh and J R Ferguson and J M Barber and D M Boyle},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/863644/},
  note = {Source identifier: 863644}
}