Значения для термина "free placebo" отсутствуют.
1 The other half took the same number of drug- free placebo capsules.
2 Kids in those studies were treated with over-the-counter medicines, drug- free placebo pills or nothing.
3 On the other, they were given drug- free placebo pills.
4 The other half took a drug- free placebo pill.
5 In one arm of the trial, participants were randomly assigned to take either hormone therapy or a drug- free placebo .
6 They randomly assigned half of the participants to take vitamin D3 supplements every day, and the other half to take a vitamin- free placebo pill.
7 Each of those studies randomly assigned 1,825 babies younger than three months to receive probiotics, a bacteria- free placebo or no treatment.
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