@misc{indiciae6f8284d8be7f,
  title = {Development at 18 months.},
  author = {H B Valman},
  year = {1981},
  doi = {10.1136/bmj.283.6295.850},
  url = {https://pubmed.ncbi.nlm.nih.gov/6794725/},
  note = {Source identifier: 6794725}
}