@misc{indiciae717939506d5b,
  title = {[Quadricuspid aortic valve: case reports].},
  author = {M Mathison and A Furuse and H Kotsuda and O Tanaka and M Chikada},
  year = {1990},
  url = {https://pubmed.ncbi.nlm.nih.gov/2374316/},
  note = {Source identifier: 2374316}
}