@misc{indiciae27a7e2f413a9,
  title = {Rapid progression in valvular aortic stenosis.},
  author = {A H Gradman},
  year = {1979},
  doi = {10.1378/chest.76.4.376},
  url = {https://pubmed.ncbi.nlm.nih.gov/477420/},
  note = {Source identifier: 477420}
}