@misc{indiciaef4e010cc18e9,
  title = {Delayed motor development.},
  author = {R S Illingworth},
  year = {1968},
  doi = {10.1016/s0031-3955(16)32161-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/4174920/},
  note = {Source identifier: 4174920}
}