title: Adverse drug reactions: definition of the problem.
mesh_terms: D004335:Drug and Narcotic Control; D064420:Drug-Related Side Effects and Adverse Reactions; D006801:Humans; D008487:Medical History Taking; D011159:Population Surveillance; D011639:Public Opinion; D012042:Registries; D006113:United Kingdom; D014481:United States; D014486:United States Food and Drug Administration