From 2017 to 2022 roughly, the median blood Pb concentrations showed an increasing trend, with the greatest rising in 2021 and reaching the highest (33.80μg/L) by 2022.
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Distribution of blood lead and cadmium levels in healthy children aged 0 to 18 years and analysis of related influencing factors in Henan, China: data findings from 2017 to 2022.
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