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Summary of the ADHD and TDC subjects used in this study. Abbreviations are as follows: TDC, typically developing children; KKI, the Kennedy Krieger Institute; NeuroIMAGE, the NeuroIMAGE sample; NYU, the New York University Child Study Center; OHSU, Oregon Health and Science University; Peking_1, Peking_2, and Peking_3, Peking University; and Pittsburgh, the University of Pittsburgh.
