title: Certification in toxicology: an international perspective of risk:benefit.
authors: William J
authors: WJ
authors: Brock
authors: A P Adam H
authors: AP
authors: Woolley
authors: Tetsuro
authors: T
authors: Sugimoto
mesh_terms: D002568:Certification / Q000592:standards* / Q000639:trends; D005060:Europe; D006801:Humans; D007564:Japan; D010549:Personal Satisfaction; D011361:Professional Competence; D014116:Toxicology / Q000592:standards*; D014481:United States