@misc{indiciaeca637b26066f,
  title = {Physical training after heart valve replacement.},
  author = {J P Newell and C T Kappagoda and J B Stoker and P B Deverall and D A Watson and R J Linden},
  year = {1980},
  doi = {10.1136/hrt.44.6.638},
  url = {https://pubmed.ncbi.nlm.nih.gov/7459147/},
  note = {Source identifier: 7459147}
}