@misc{indiciae8b2a129feae5,
  title = {Left ventricular outflow obstruction caused by mitral ring calcification.},
  author = {K Iga and K Hori},
  year = {1990},
  doi = {10.1016/s0002-8703(05)80045-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/2301238/},
  note = {Source identifier: 2301238}
}