@misc{indiciaeb310e071a037,
  title = {Two-dimensional echocardiography in mitral annulus calcification.},
  author = {I Kronzon and J Mitchell and J Shapiro and H E Winer and P Newman},
  year = {1980},
  doi = {10.2214/ajr.134.2.355},
  url = {https://pubmed.ncbi.nlm.nih.gov/6766246/},
  note = {Source identifier: 6766246}
}