@misc{indiciae97a28c11d96b,
  title = {Percutaneous balloon aortic valvotomy.},
  author = {K S Ng and A T Tan and C N Chan and Z P Ding},
  year = {1993},
  url = {https://pubmed.ncbi.nlm.nih.gov/8266174/},
  note = {Source identifier: 8266174}
}