@misc{indiciae78a0c75ecbeb,
  title = {Down's syndrome and human behaviour.},
  author = {J P Welch},
  year = {1968},
  doi = {10.1038/219506a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4233298/},
  note = {Source identifier: 4233298}
}