@misc{indiciaeea18772aea00,
  title = {Heart valve replacement in the elderly.},
  author = {A H de Bono and T A English and B B Milstein},
  year = {1978},
  doi = {10.1136/bmj.2.6142.917},
  url = {https://pubmed.ncbi.nlm.nih.gov/709126/},
  note = {Source identifier: 709126}
}