@misc{indiciae5c46fc569437,
  title = {A clinicopathological study on mitral ring calcification.},
  author = {M Sugiura and S Uchiyama and K Kuwako and S Ohkawa and K Hiraoka},
  year = {1977},
  doi = {10.1536/ihj.18.154},
  url = {https://pubmed.ncbi.nlm.nih.gov/870725/},
  note = {Source identifier: 870725}
}