Placebo or intervention? Is it all a sham?
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BD
Sites
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JM
Neal
D000765:Anesthesia, Conduction / Q000379:methods*; D006801:Humans; D010919:Placebos / Q000009:adverse effects*; D016032:Randomized Controlled Trials as Topic / Q000379:methods; D012107:Research Design
D010919:Placebos