@misc{indiciae656653dc5bbc,
  title = {Association between lower level lead concentrations and hyperactivity in children.},
  author = {O J David},
  year = {1974},
  doi = {10.1289/ehp.74717},
  url = {https://pubmed.ncbi.nlm.nih.gov/4831139/},
  note = {Source identifier: 4831139}
}