@misc{indiciaead8a20ce80b8,
  title = {Mitral commissurotomy; a perspective.},
  author = {L I Bonchek},
  year = {1979},
  doi = {10.1378/chest.75.2.112},
  url = {https://pubmed.ncbi.nlm.nih.gov/421543/},
  note = {Source identifier: 421543}
}