@misc{indiciae844a37e766ad,
  title = {Closed valvulotomy for calcific mitral stenosis.},
  author = {G N Olinger and F W Rio and J V Maloney},
  year = {1971},
  url = {https://pubmed.ncbi.nlm.nih.gov/5126677/},
  note = {Source identifier: 5126677}
}