@misc{indiciaeeab9f372711f,
  title = {Cardiac surgery in the elderly.},
  author = {A T Elder and E W Cameron},
  year = {1989},
  doi = {10.1136/bmj.299.6692.140},
  url = {https://pubmed.ncbi.nlm.nih.gov/2504352/},
  note = {Source identifier: 2504352}
}