@misc{indiciaedcd55389cb5b,
  title = {[Valve diseases in the aged: when to operate?].},
  author = {J Azpitarte},
  year = {1998},
  doi = {10.1016/s0300-8932(98)74704-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/9522607/},
  note = {Source identifier: 9522607}
}