@misc{indiciaeb961efd73313,
  title = {Indications for heart valve replacement.},
  author = {M E Assey and J F Spann},
  year = {1990},
  doi = {10.1002/clc.4960130204},
  url = {https://pubmed.ncbi.nlm.nih.gov/2407398/},
  note = {Source identifier: 2407398}
}