@misc{indiciae02bfe42a71c0,
  title = {Heterograft aortic valve replacement.},
  author = {J K Clarebrough and J P Richardson and G S Hale and I R McDonald and L Simpson},
  year = {1968},
  doi = {10.5694/j.1326-5377.1968.tb83394.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/5750063/},
  note = {Source identifier: 5750063}
}