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Linear model (regression) of harmonized means of acrylamide biomarkers AAMA and GAMA in smokers as reported by European published papers and HBM4EU Aligned Studies. Study means represented by country based color-coded dots with size dependent on the corresponding sample number. Population size is represented by the size of the circles indicating single surveys. (A): AAMA in µg/L, (B): GAMA in µg/L. Gray: 95%-confidence interval. Regression line is in blue.
