A cohort may begin.Logical formLearned from5 sentences. Preparation can be for a double cohort.Logical formLearned from5 sentences. A follow-up may pertain-to a cohort.Logical formLearned from5 sentences. A composition may pertain-to a cohort.Logical formLearned from5 sentences. Walls may pertain-to cohorts.Logical formLearned from5 sentences. Persons may have a cohort.Logical formLearned from5 sentences. Effects may be found in a cohort.Logical formLearned from5 sentences. A cohort can be in history.Logical formLearned from5 sentences. A (cohort study) can be constituted-of-or-filled-with mortality.Logical formLearned from5 sentences. Some cohort can be constituted-of-or-filled-with patients.Logical formLearned from5 sentences. Cohorts can be constituted-of-or-filled-with ancestries.Logical formLearned from5 sentences. A success of a (treatment drug) may be compared across some (treatment butalbital injestion cohorts).Logical formLearned from5 sentences. A band can be constituted-of-or-filled-with cohorts.Logical formLearned from5 sentences. A shift can be in (age cohorts).Logical formLearned from5 sentences. A person may mention cohorts mischief.Logical formLearned from5 sentences.