Exposure to Manganese in Drinking Water during Childhood and Association with Attention-Deficit Hyperactivity Disorder: A Nationwide Cohort Study.

Because there is an increasing trend in ADHD diagnosis over time ( Atladottir et al. 2015 ) and the incidence rate of ADHD peaks later in females than in males ( Dalsgaard et al. 2019 ), a relatively large proportion of cases was excluded in the subtype analyses, more so for females.

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