@misc{indiciae0c5ec481c6f5,
  title = {Changes in cognitive functioning of the oldest old.},
  author = {B Johansson and S H Zarit and S Berg},
  year = {1992},
  doi = {10.1093/geronj/47.2.p75},
  url = {https://pubmed.ncbi.nlm.nih.gov/1538071/},
  note = {Source identifier: 1538071}
}