@misc{indiciae7d110a9d6f2c,
  title = {Mitral valve replacement with ball valve prostheses.},
  author = {A Starr},
  year = {1971},
  doi = {10.1136/hrt.33.suppl.47},
  url = {https://pubmed.ncbi.nlm.nih.gov/5572646/},
  note = {Source identifier: 5572646}
}