@misc{indiciae39753ee64dde,
  title = {Valvular surgery in the elderly.},
  author = {S E Fremes and B S Goldman and J Ivanov and R D Weisel and T E David and T Salerno},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2788532/},
  note = {Source identifier: 2788532}
}