@misc{indiciae518c8803990d,
  title = {Mitral valve surgery.},
  author = {L Brock},
  year = {1967},
  doi = {10.3109/14017436709131835},
  url = {https://pubmed.ncbi.nlm.nih.gov/6078789/},
  note = {Source identifier: 6078789}
}