1. The size and burden of mental disorders and other disorders of the brain in Europe 2010. Wittchen HU, Jacobi F, Rehm J, Gustavsson A, Svensson M, Jönsson B, Olesen J, Allgulander C, Alonso J, Faravelli C, Fratiglioni L, Jennum P, Lieb R, Maercker A, van Os J, Preisig M, Salvador-Carulla L, Simon R, Steinhausen HC. Eur Neuropsychopharmacol. 2011 Sep;21(9):655-79.
  2. The worldwide prevalence of ADHD: a systematic review and metaregression analysis. Polanczyk G, de Lima MS, Horta BL, Biederman J, Rohde LA. Am J Psychiatry. 2007 Jun;164(6):942-8.
  3. Prevalence of disorders of the autism spectrum in a population cohort of children in South Thames: the Special Needs and Autism Project (SNAP). Baird G, Simonoff E, Pickles A, Chandler S, Loucas T, Meldrum D, Charman T. Lancet. 2006 Jul 15;368(9531):210-5.
  4. Epidemiology of autism spectrum disorders in adults in the community in England. Brugha TS, McManus S, Bankart J, Scott F, Purdon S, Smith J, Bebbington P, Jenkins R, Meltzer H. Arch Gen Psychiatry. 2011 May;68(5).
  5. Co-morbidity of adult attention-deficit/hyperactivity disorder with focus on personality traits and related disorders in a tertiary referral center.
    Jacob CP, Romanos J, Dempfle A, Heine M, Windemuth-Kieselbach C, Kruse A, Reif A, Walitza S, Romanos M, Strobel A, Brocke B, Schäfer H, Schmidtke A, Böning J, Lesch KP. Eur Arch Psychiatry Clin Neurosci. 2007 Sep;257(6):309-17.
  6. Diagnosis: Redefining autism. Singer E Nature. 2012 Nov 1;491(7422):S12-3.
  7. Phenotypic and measurement influences on heritability estimates in childhood ADHD. Freitag CM, Rohde LA, Lempp T, Romanos M. Eur Child Adolesc Psychiatry. 2010 Mar;19(3).
  8. ADHD and autism: differential diagnosis or overlapping traits? A selective review. Taurines R, Schwenck C, Westerwald E, Sachse M, Siniatchkin M, Freitag C. Atten Defic Hyperact Disord. 2012 Sep;4(3):115-39.
  9. Shared heritability of attention-deficit/hyperactivity disorder and autism spectrum disorder. Rommelse NN, Franke B, Geurts HM, Hartman CA, Buitelaar JK. Eur Child Adolesc Psychiatry. 2010 Mar;19(3):281-95.
  10. A genome-wide association study of bipolar disorder and comorbid migraine. Oedegaard KJ1, Greenwood TA, Johansson S, Jacobsen KK, Halmoy A, Fasmer OB, Akiskal HS; Bipolar Genome Study (BiGS), Haavik J, Kelsoe JR. Genes Brain Behav. 2010 Oct;9(7):673-80.
  11. Attention-deficit/hyperactivity disorder: a selective overview. Biederman J. Biol Psychiatry. 2005 Jun 1;57(11):1215-20.
  12. Common genetic variants, acting additively, are a major source of risk for autism. Klei L, Sanders SJ, Murtha MT, Hus V, Lowe JK, Willsey AJ, Moreno-De-Luca D, Yu TW, Fombonne E, Geschwind D, Grice DE, Ledbetter DH, Lord C, Mane SM, Martin CL, Martin DM, Morrow EM, Walsh CA, Melhem NM, Chaste P, Sutcliffe JS, State MW, Cook EH Jr, Roeder K, Devlin B. Mol Autism. 2012 Oct 15;3(1):9
  13. Randomized, controlled, crossover trial of methylphenidate in pervasive developmental disorders with hyperactivity. Research Units on Pediatric Psychopharmacology Autism Network. Arch Gen Psychiatry. 2005 Nov;62(11):1266-74.