@misc{indiciaea706490f494c,
  title = {A quadricuspid aortic valve.},
  author = {T O Cheng},
  year = {1992},
  doi = {10.1536/ihj.33.583},
  url = {https://pubmed.ncbi.nlm.nih.gov/1453558/},
  note = {Source identifier: 1453558}
}