@misc{indiciaec3ccd9264cfb,
  title = {Balloon valvotomy.},
  author = {F Y Lau},
  year = {1990},
  doi = {10.1016/0002-8703(90)90284-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/2248205/},
  note = {Source identifier: 2248205}
}