title: Clarifying standards for using placebos.
authors.forename: Robert J
authors.initials: RJ
authors.lastname: Levine
authors.forename: William T
authors.initials: WT
authors.lastname: Carpenter
authors.forename: Paul S
authors.initials: PS
authors.lastname: Appelbaum
mesh_terms: D018849:Controlled Clinical Trials as Topic / Q000941:ethics* / Q000592:standards; D003906:Developing Countries; D028744:Ethics Committees, Research; D032984:Ethics, Research; D005062:European Union; D017408:Guidelines as Topic; D006381:Helsinki Declaration; D006801:Humans; D010919:Placebos / Q000592:standards*
chemical_list: D010919:Placebos