title: Improving detection of adverse effects of marketed drugs.
authors.affiliation: University of Pennsylvania, Philadelphia, PA 19104-6178, USA.
authors.forename: Donald F
authors.initials: DF
authors.lastname: Klein
authors.forename: Charles P
authors.initials: CP
authors.lastname: O'Brien
mesh_terms: D016907:Adverse Drug Reaction Reporting Systems; D016208:Databases, Factual; D064420:Drug-Related Side Effects and Adverse Reactions; D006801:Humans; D017891:Pharmacoepidemiology; D011159:Population Surveillance; D014481:United States; D014486:United States Food and Drug Administration