@misc{indiciae4f64cad597a6,
  title = {[Elective biliary surgery in the aged].},
  author = {P Mongredien and P Bergevin and M Broutin and H Charleux},
  year = {1979},
  url = {https://pubmed.ncbi.nlm.nih.gov/534169/},
  note = {Source identifier: 534169}
}