@misc{indiciaefe99a6619761,
  title = {Generic, simple risk stratification model for heart valve surgery.},
  author = {Gareth Ambler and Rumana Z Omar and Patrick Royston and Robin Kinsman and Bruce E Keogh and Kenneth M Taylor},
  year = {2005},
  doi = {10.1161/circulationaha.104.515049},
  url = {https://pubmed.ncbi.nlm.nih.gov/15998680/},
  note = {Source identifier: 15998680}
}