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Forest plot of highest TCE exposure group and kidney cancer from random-effects meta-analysis. Individual study results are plotted with 95% confidence intervals. A risk estimate of 1.0 is assigned for highest exposure in Anttila et al. [38], Axelson et al. [37] and Hansen et al. [39] to account for presumed reporting bias. Symbol sizes reflect relative weights of the 13 cohort and case-control studies.
