References – Attention Deficit Disorder in Preschoolers
Connor DF. "Preschool Attention Deficit Hyperactivity Disorder: A Review of Prevalence, Diagnosis, Neurobiology, and Stimulant Treatment," Journal of Developmental and Behavioral Pediatrics (February 2002): Vol. 23, Suppl. 1, pp. S1-S9.
Crowell SE, et al. "Autonomic Correlates of Attention-Deficit/Hyperactivity Disorder and Oppositional Defiant Disorder in Preschool Children," Journal of Abnormal Psychiatry (February 2006): Vol. 115, No. 1, pp. 174-78.