@misc{indiciaee42379de5c13,
  title = {Echocardiographic left ventricular function in mitral stenosis.},
  author = {Z Halperin and A Karasik and B S Lewis and I L Geft and M S Gotsman},
  year = {1978},
  url = {https://pubmed.ncbi.nlm.nih.gov/700997/},
  note = {Source identifier: 700997}
}