An efficacy of an approach may be assessed.Logical formLearned from2 sentences. An efficacy of (stem cell transplantation) may be reported to date.Logical formLearned from2 sentences. Efficacy may undergo an investigation.Logical formLearned from2 sentences. Efficacy can be for disease.Logical formLearned from2 sentences. Randomized trials may demonstrate efficacy.Logical formLearned from2 sentences. Some studies may indicate efficacy.Logical formLearned from2 sentences. An efficacy can be systemic.Logical formLearned from2 sentences. A control may pertain-to an efficacy.Logical formLearned from2 sentences. An efficacy may pertain-to a schedule.Logical formLearned from2 sentences. Empirical data may confirm an efficacy.Logical formLearned from2 sentences. Efficacy of naproxens can be an observation.Logical formLearned from2 sentences. (Trial data) may indicate lack of efficacy.Logical formLearned from2 sentences. Efficacy may be compromised.Logical formLearned from2 sentences. Efficacy may undergo an estimation.Logical formLearned from2 sentences. Agents may demonstrate efficacy.Logical formLearned from2 sentences.