@misc{indiciae422fa4047a8c,
  title = {A note on mongolism in twins.},
  author = {A SMITH},
  year = {1955},
  doi = {10.1136/jech.9.4.212},
  url = {https://pubmed.ncbi.nlm.nih.gov/13269753/},
  note = {Source identifier: 13269753}
}