@misc{indiciae11b1403ba9e4,
  title = {Evaluation of upstream sampling method for quantitating aortic regurgitation in man.},
  author = {K Miyazawa and M Yamaki and K Ishikawa and K Tsuiki and Y Kobayashi},
  year = {1972},
  doi = {10.1620/tjem.108.101},
  url = {https://pubmed.ncbi.nlm.nih.gov/4568751/},
  note = {Source identifier: 4568751}
}