@misc{indiciae49cdb209da1d,
  title = {Mitral disc variance (Harken prosthesis).},
  author = {S D Sharma and R M Easley and L I Zaroff and S Goldstein},
  year = {1973},
  doi = {10.1016/0002-8703(73)90347-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/4270310/},
  note = {Source identifier: 4270310}
}