title: ADHD: prevalence, diagnosis, and issues of comorbidity.
authors.affiliation: Department of Psychiatry, Harvard Medical School, Boston, Massachusetts, USA.
authors.forename: Timothy E
authors.initials: TE
authors.lastname: Wilens
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D002648:Child; D002675:Child, Preschool; D015897:Comorbidity; D003430:Cross-Sectional Studies; D039721:Diagnostic and Statistical Manual of Mental Disorders; D006801:Humans; D001523:Mental Disorders / Q000175:diagnosis / Q000453:epidemiology / Q000523:psychology