@misc{indiciae6155cfa650c4,
  title = {The first-born child: patterns of development.},
  author = {M K Ounsted and A M Hendrick},
  year = {1977},
  doi = {10.1111/j.1469-8749.1977.tb07937.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/892241/},
  note = {Source identifier: 892241}
}