Efficacy may pertain-to a system.Logical formLearned from4 sentences. A sacred rite can be constituted-of-or-filled-with efficacy.Logical formLearned from4 sentences. A vaccine may have efficacy.Logical formLearned from4 sentences. A duration may pertain-to an efficacy.Logical formLearned from4 sentences. (Efficacy variability) may increase.Logical formLearned from4 sentences. (Efficacy variability) may undergo an interaction.Logical formLearned from4 sentences. Persons may demonstrate an efficacy of an approach.Logical formLearned from4 sentences. Efficacy may be provened.Logical formLearned from4 sentences. An efficacy may pertain-to a register.Logical formLearned from4 sentences. A drug can be with efficacy.Logical formLearned from4 sentences. Conclusions can be about an efficacy of dismutase.Logical formLearned from4 sentences. Support can be for an efficacy.Logical formLearned from4 sentences. Concerns can be about efficacy.Logical formLearned from4 sentences. Insufficient evidence may pertain-to an efficacy.Logical formLearned from4 sentences. An efficacy may pertain-to a movement.Logical formLearned from4 sentences.