@misc{indiciae252d11d36cfb,
  title = {Differential diagnosis in the elderly.},
  author = {D P Birkett},
  year = {1983},
  doi = {10.1176/ajp.140.1.aj1401134},
  url = {https://pubmed.ncbi.nlm.nih.gov/6847977/},
  note = {Source identifier: 6847977}
}