@misc{indiciae31c753f65f64,
  title = {Aortic valvuloplasty--a valid alternative?},
  author = {P C Block},
  year = {1988},
  doi = {10.1056/nejm198807213190309},
  url = {https://pubmed.ncbi.nlm.nih.gov/3386696/},
  note = {Source identifier: 3386696}
}