A (screening study) can be randomized.Logical formLearned from2 sentences. Some randomized controlled trials may involve some participants.Logical formLearned from2 sentences. Randomized trials may be conducted in sites.Logical formLearned from2 sentences. A randomized trial may test some strategies.Logical formLearned from1 sentences. Randomized controlled trials can be a gold standard.Logical formLearned from1 sentences. Randomized studies may be permitted on a battlefield.Logical formLearned from1 sentences. Research may rely on randomized trials.Logical formLearned from1 sentences. (Admission lotteries) can be randomized.Logical formLearned from1 sentences. Some treatments can be with randomized trials.Logical formLearned from1 sentences. A randomized controlled trial can be in ophthalmology.Logical formLearned from1 sentences. Persons may publish a randomized controlled trial of a (malaria vaccine).Logical formLearned from1 sentences. Randomized controlled trials may become a pillar of clinical research.Logical formLearned from1 sentences. Randomized controlled trials can be on therapies.Logical formLearned from1 sentences. Randomized trials may show an improvement.Logical formLearned from1 sentences. First-line treatment may be shown in randomized trials.Logical formLearned from1 sentences.