1. AAIDD (2010) Intellectual disability: definition, classification, and systems of supports, 11th edn. AAIDD, Annapolis Junction
2. American Psychiatric A, American Psychiatric Association (2000) Task force on D-I. Diagnostic and statistical manual of mental disorders: DSM-IV-TR. American Psychiatric Association, Washington, DC
3. American Speech-Language-Hearing Association. Definitions of communication disorders and variations [Relevant Paper]. Available from
www.asha.org/policy1993
4. Barbaresi WJ, Katusic SK, Colligan RC, Weaver AL, Jacobsen SJ (2005) Math learning disorder: incidence in a population-based birth cohort, 1976–82, Rochester, Minn. Ambul Pediatr 5(5):281–289
5. Barbaresi WJ, Katusic SK, Colligan RC, Weaver AL, Leibson CL, Jacobsen SJ (2006) Long-term stimulant medication treatment of attention-deficit/hyperactivity disorder: results from a population-based study. J Dev Behav Pediatr 27:1–10