Key references: Overview of attention deficit hyperactivity disorder in children

Canadian ADHD Resource Alliance (CADDRA). Canadian ADHD practice guidelines. 4th ed. Toronto, ON: CADDRA; 2018. https://adhdlearn.caddra.ca/purchase-guidelines/
National Institute for Health and Clinical Excellence (NICE). Attention deficit hyperactivity disorder: diagnosis and management (NG87). London: NICE; 2018. https://www.nice.org.uk/guidance/NG87
Wolraich ML, Hagan JF, Allan C, Chan E, Davison D, Earls M, et al. Clinical practice guideline for the diagnosis, evaluation, and treatment of attention-deficit/hyperactivity disorder in children and adolescents. Pediatrics 2019;144(4). https://www.ncbi.nlm.nih.gov/pubmed/31570648