title: Letter: Improved labelling of chemicals.
mesh_terms: D002648:Child; D003358:Cosmetics / Q000506:poisoning*; D004348:Drug Labeling; D006801:Humans; D008708:Methemoglobinemia / Q000139:chemically induced*; D009573:Nitrites / Q000506:poisoning*
chemical_list: D003358:Cosmetics; D009573:Nitrites