@misc{indiciaea70e3757034a,
  title = {Changes in functional competency in the oldest old. A longitudinal study.},
  author = {S H Zarit and B Johansson and B Malmberg},
  year = {1995},
  doi = {10.1177/089826439500700101},
  url = {https://pubmed.ncbi.nlm.nih.gov/10172778/},
  note = {Source identifier: 10172778}
}