title: Reply to: The geographic variation in the prevalence of attention-deficit/hyperactivity disorder the United States is likely due to geographical variations of solar ultraviolet B doses and race.
authors.affiliation: Department of Experimental Psychology, Utrecht University, Utrecht; Research Institute Brainclinics, Nijmegen. Electronic address: martijn@brainclinics.com.
authors.forename: Martijn
authors.initials: M
authors.lastname: Arns
authors.affiliation: Leiden Institute for Brain and Cognition, Department of Clinical Child and Adolescent Studies, Leiden University, Leiden, The Netherlands.
authors.forename: Kristiaan B
authors.initials: KB
authors.lastname: van der Heijden
authors.affiliation: Ohio State University, Columbus, Ohio.
authors.forename: L
authors.initials: L
authors.lastname: Eugene Arnold
authors.affiliation: Department of Experimental Psychology, Utrecht University, Utrecht.
authors.forename: J
authors.initials: J
authors.lastname: Leon Kenemans
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000453:epidemiology*; D005260:Female; D006801:Humans; D008297:Male; D012993:Solar Energy