@misc{indiciaeb426ec928ce9,
  title = {Too old for heart valve replacement?},
  author = {P J Walter and R Mohan},
  year = {1996},
  doi = {10.1093/oxfordjournals.eurheartj.a014899},
  url = {https://pubmed.ncbi.nlm.nih.gov/8733079/},
  note = {Source identifier: 8733079}
}