title: Mental retardation and ADHD!
authors.forename: R G
authors.initials: RG
authors.lastname: Voigt
authors.forename: G H
authors.initials: GH
authors.lastname: Johnson
authors.forename: F R
authors.initials: FR
authors.lastname: Brown
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications*; D002648:Child; D006801:Humans; D008607:Intellectual Disability / Q000150:complications*; D008774:Methylphenidate / Q000627:therapeutic use*
chemical_list: D008774:Methylphenidate