@misc{indiciae290ca3fea2a7,
  title = {Dysfunction of mitral ball valve prosthesis.},
  author = {M R Nair and W F Duvernoy and D T Anbe and E G Zobl and A Arbulu},
  year = {1981},
  url = {https://pubmed.ncbi.nlm.nih.gov/7263291/},
  note = {Source identifier: 7263291}
}