Ensuring comparability of benzene exposure estimates across three nested case–control studies in the petroleum industry in support of a pooled epidemiological analysis

Three case–control studies each nested within a cohort of petroleum workers assessed exposure to benzene in relation to risk of haematopoietic cancers. These studies have each been updated and the cases will be pooled to derive a more powerful study. The benzene exposure of new leukemia cases and co...

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