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placebo-controlled trial
ООН., СПИД.	ensayo con testigos tratados con placebo
Английский тезаурус
placebo-controlled trial
мед.	A type of clinical trial. In placebo-controlled trials, one group of participants the control arm receives an inactive drug or other intervention, called a placebo, while another group of participants the experimental arm receives the active drug being tested. The two groups are compared to see if the drug is more effective than the placebo. см. также placebo