Some workers can be in a cohort.Logical formLearned from2 sentences. A cohort may have a percentage of deaths.Logical formLearned from2 sentences. A case can be for a cohort.Logical formLearned from2 sentences. A (lung cancer risk) may be based on exposure of a cohort.Logical formLearned from2 sentences. A cohort may be limited by lack of follow-up.Logical formLearned from2 sentences. Cohorts may include some welders.Logical formLearned from2 sentences. A basis can be for analyes of a cohort.Logical formLearned from2 sentences. (Cohort data) can be detailed.Logical formLearned from2 sentences. Estimates can be from cohorts.Logical formLearned from2 sentences. (Risk estimates) can be from cohorts.Logical formLearned from2 sentences. A (lung cancer smr) can be in a cohort.Logical formLearned from2 sentences. Some deaths can be in a cohort.Logical formLearned from2 sentences. (Risk estimates) may be based on cohorts.Logical formLearned from2 sentences. (Risk estimates) may be based on a cohort.Logical formLearned from2 sentences. Data can be from cohorts.Logical formLearned from2 sentences.