Key references: Presentation of developmental delay and disability

American Academy of Pediatrics (AAP). Children with intellectual disabilities [webpage]. Itasca, IL: AAP; 2015 (last updated). https://www.healthychildren.org/English/health-issues/conditions/developmental-disabilities/Pages/default.aspx
Belanger SA, Caron J. Evaluation of the child with global developmental delay and intellectual disability. Paediatr Child Health 2018;23(6):403–19. https://www.ncbi.nlm.nih.gov/pubmed/30919832
Buckley N, Glasson EJ, Chen W, Epstein A, Leonard H, Skoss R, et al. Prevalence estimates of mental health problems in children and adolescents with intellectual disability: A systematic review and meta-analysis. Aust N Z J Psychiatry 2020;54(10):4867420924101. https://www.ncbi.nlm.nih.gov/pubmed/32475125
Whitehouse AJO, Evans K, Eapen V, Wray J. A national guideline for the assessment and diagnosis of autism spectrum disorders in Australia. Brisbane: Cooperative Research Centre for Living with Autism; 2018. https://www.autismcrc.com.au/knowledge-centre/resource/national-guideline