@misc{indiciaed4de0338c9e3,
  title = {Biologic valves. Their performance and prospects.},
  author = {D N Ross},
  year = {1972},
  doi = {10.1161/01.cir.45.6.1259},
  url = {https://pubmed.ncbi.nlm.nih.gov/5032823/},
  note = {Source identifier: 5032823}
}