@misc{indiciae566bc9552bcb,
  title = {Lead and hyperactivity: lead levels among hyperactive children.},
  author = {O J David and S P Hoffman and J Sverd and J Clark},
  year = {1977},
  doi = {10.1007/bf00915088},
  url = {https://pubmed.ncbi.nlm.nih.gov/604381/},
  note = {Source identifier: 604381}
}