@misc{indiciaef61bdfb1c1ac,
  title = {MONGOLISM IN TWINS.},
  author = {A D MCDONALD},
  year = {1964},
  doi = {10.1136/jmg.1.1.39},
  url = {https://pubmed.ncbi.nlm.nih.gov/14205983/},
  note = {Source identifier: 14205983}
}