@misc{indiciae30fd21211eec,
  title = {The etiology of hyperactivity.},
  author = {J A Johnson},
  year = {1981},
  doi = {10.1177/001440298104700506},
  url = {https://pubmed.ncbi.nlm.nih.gov/7202459/},
  note = {Source identifier: 7202459}
}