@misc{indiciaec6de9bdc09c0,
  title = {Asynchronous leaflet closure in the normally functioning bileaflet mechanical valve.},
  author = {R L Donnerstein and H D Allen},
  year = {1990},
  doi = {10.1016/s0002-8703(05)80304-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/2309618/},
  note = {Source identifier: 2309618}
}