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Medicine, 14.07.2019 04:10 DAVISJOS00123

Why is it difficult to justify the use of a placebo control in a trial in which a "standard-of-care" therapy already exists? why is a placebo control easier to justify in trials in which there is no established "standard-of-care" therapy? should those participating in a clinical trial be notified of the possibility that they may be given a placebo?

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