ADHD	Attention-deficit/hyperactivity disorder;
IGF-1	Insulin-like growth factor-1;
IGFBP-3	Insulin-like growth factor-binding protein 3;
SDs	Standard deviation scores;
GH	Growth hormone;
DSM-V	Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition;
QCD	Questionnaire–Children with Difficulties;
SNAP-IV	The Swanson, Nolan, and Pelham scale version IV;
CPRS	Conners’ Parents Rating Scales;