@misc{indiciae2d2895935850,
  title = {Exercise and the heart.},
  author = {J N Morris and M G Everitt and R Pollard and S P Chave and A M Semmence},
  year = {1981},
  doi = {10.1016/s0140-6736(81)92099-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/6109911/},
  note = {Source identifier: 6109911}
}