@misc{indiciae993d9121ca3a,
  title = {Materials and heart valve prostheses.},
  author = {W R Pierie and W D Hancock and S Koorajian and A Starr},
  year = {1968},
  doi = {10.1111/j.1749-6632.1968.tb20292.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5238643/},
  note = {Source identifier: 5238643}
}