title: Letter to the editor regarding Bailey article.
authors.forename: William J
authors.initials: WJ
authors.lastname: Waddell
authors.forename: John
authors.initials: J
authors.lastname: Doull
authors.forename: Karl K
authors.initials: KK
authors.lastname: Rozman
authors.forename: Joseph F
authors.initials: JF
authors.lastname: Borzelleca
mesh_terms: D001580:Benzopyrenes; D002273:Carcinogens; D004056:Differential Threshold; D009374:Neoplasms, Experimental / Q000139:chemically induced* / Q000378:metabolism / Q000473:pathology
chemical_list: D001580:Benzopyrenes; D002273:Carcinogens