@misc{indiciaea5c200509834,
  title = {Are negative toxicological data suspect: an epilog.},
  author = {P J Gehring},
  year = {1989},
  doi = {10.1016/0273-2300(89)90045-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/2756164/},
  note = {Source identifier: 2756164}
}