@misc{indiciaebdcea2cd043d,
  title = {Quadricuspid aortic valve.},
  author = {S Gordon and M Butler},
  year = {1991},
  doi = {10.1016/0002-9149(91)90577-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2025323/},
  note = {Source identifier: 2025323}
}