@misc{indiciaeb8c3c1d88695,
  title = {Aortic valvar replacements.},
  author = {D N Ross},
  year = {1971},
  doi = {10.1136/hrt.33.suppl.39},
  url = {https://pubmed.ncbi.nlm.nih.gov/5572643/},
  note = {Source identifier: 5572643}
}