A study can be validated.Logical formLearned from2 sentences. An index can be validated.Logical formLearned from2 sentences. A (symptom score) can be validated.Logical formLearned from2 sentences. A (teacher behavior inventory) can be validated.Logical formLearned from2 sentences. An (evaluation protocol) can be validated.Logical formLearned from2 sentences. Access can be validated.Logical formLearned from2 sentences. Implementations can be validated.Logical formLearned from2 sentences. A (date code) can be validated.Logical formLearned from2 sentences. A surrogate can be validated.Logical formLearned from2 sentences. A marker can be validated.Logical formLearned from2 sentences. (Cam therapies) can be validated.Logical formLearned from2 sentences. An (evaluation instrument) can be validated.Logical formLearned from2 sentences. An antibody can be validated.Logical formLearned from2 sentences. (Control measures) can be validated.Logical formLearned from2 sentences. Controls can be validated.Logical formLearned from2 sentences.