@misc{indiciaec56416ded2de,
  title = {[Changes in the aortic prosthesis surgical risk].},
  author = {J Valty and P Bickert and J Guerinon and P Maurice},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/931242/},
  note = {Source identifier: 931242}
}