More on the use of placebo controls.
D018849:Controlled Clinical Trials as Topic / Q000941:ethics / Q000592:standards*; D006381:Helsinki Declaration; D006801:Humans; D016134:Organizational Policy; D010919:Placebos; D012107:Research Design / Q000592:standards*; D018570:Risk Assessment; D012955:Societies, Medical
D010919:Placebos