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Subcortical brain volume differences in participants with attention deficit hyperactivity disorder in children and adults: a cross-sectional mega-analysis.
Hoogman M, Bralten J, Hibar DP, Mennes M, Zwiers MP, Schweren LS, van Hulzen KJ, Medland SE et al.

Abstract
Neuroimaging studies have shown structural alterations in several brain regions in children and adults with attention deficit hyperactivity disorder (ADHD). Through the formation of the international ENIGMA ADHD Working Group, we aimed to address weaknesses of previous imaging studies and meta-analyses, namely inadequate sample size and methodological heterogeneity. We aimed to investigate whether there are structural differences in children and adults with ADHD compared with those without this diagnosis.

Conflict of Interest
Roche Pharmaceuticals, Otsuka Pharmaceutical, General Electric Healthcare, Janssen-Cilag, Novartis, Shire, Medice, Lilly, Vifopharma, Janssen McNeil, Pfizer, Ironshore, VAYA Pharma, Neurovance, Impax, NeuroLifeSciences, Merck, Sunovion, Theravance, Almirall, Rovi, Ferrer, Lundbeck, Rubió, Roche, Servier.