| http://www.w3.org/ns/prov#value | - Second, the association between ADHD and substance abuse may be merely an artifact of the overlap between ADHD and other behavioral problems, such as conduct disorder (CD) which has been shown, in both clinical and epidemiological samples, to co-occur with ADHD 30-50% (e.g., Szatmari et al., 1989; Biederman et al., 1987).
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