@misc{indiciae55f1dcfdd093,
  title = {An experimental aortic valve.},
  author = {E P RYAN and G JOHNSON and J M BEAL},
  year = {1957},
  doi = {10.3181/00379727-94-22949},
  url = {https://pubmed.ncbi.nlm.nih.gov/13408263/},
  note = {Source identifier: 13408263}
}