@misc{indiciae10f01ddb8667,
  title = {Mitral anulus and valvular calcification.},
  author = {M Oka and N Onur and S Gross},
  year = {1983},
  url = {https://pubmed.ncbi.nlm.nih.gov/6575289/},
  note = {Source identifier: 6575289}
}