A subgroup may pertain-to a cohort.Logical formLearned from4 sentences. Some cohorts may differ.Logical formLearned from4 sentences. (Age cohorts) can be in a population.Logical formLearned from4 sentences. A cohort can be constituted-of-or-filled-with fellows.Logical formLearned from4 sentences. Girls can be in a cohort.Logical formLearned from4 sentences. A woman can be in a cohort.Logical formLearned from4 sentences. Students can be in a (cohort group).Logical formLearned from4 sentences. A (cohort study) can be long-term.Logical formLearned from4 sentences. Inclusion can be in a cohort.Logical formLearned from4 sentences. Some cohorts can be constituted-of-or-filled-with subjects.Logical formLearned from4 sentences. Data can be from cohorts.Logical formLearned from4 sentences. Some cohorts may be followed.Logical formLearned from4 sentences. Deaths can be in a cohort.Logical formLearned from4 sentences. A cohort can be constituted-of-or-filled-with physicians.Logical formLearned from4 sentences. A (birth cohort) can be longitudinal.Logical formLearned from4 sentences.