@misc{indiciaec7a3c8b6914a,
  title = {Percutaneous mitral balloon valvotomy.},
  author = {P C Block},
  year = {1992},
  doi = {10.1056/nejm199203193261204},
  url = {https://pubmed.ncbi.nlm.nih.gov/1538723/},
  note = {Source identifier: 1538723}
}