@misc{indiciaee75680d8b0fa,
  title = {Intellectual changes in aged twins.},
  author = {L F JARVIK and F J KALLMANN and A FALEK},
  year = {1962},
  doi = {10.1093/geronj/17.3.289},
  url = {https://pubmed.ncbi.nlm.nih.gov/14451358/},
  note = {Source identifier: 14451358}
}