Luigi Mazzone MD Ph.D., is the author of several book chapters and numerous research papers published in leading peer-reviewed psychiatric journals. He is actually working as a Clinical Researcher at the Division of Child Psychiatry at Bambino Gesù Hospital in Vatican, Rome, Italy.Benedetto Vitiello is a psychiatrist with expertise in psychopharmacology and treatment research. He has been part of many publicly funded clinical trials testing the effects of interventions in children and adolescents, such as the Multimodal Treatment of Children with Attention Deficit Hyperactivity Disorder (MTA), the Treatment for Adolescents with Depression Study (TADS), the Research Units on Pediatric Psychopharmacology (RUPP) network studies, the Preschoolers with ADHD Treatment Study (PATS), and the Treatment of Early Onset Schizophrenia Study (TEOSS). He is adjunct Professor of Psychiatry at the Johns Hopkins University in Baltimore, Maryland. He works at theNational Institutes of Health in Bethesda, Maryland, as the chief of the Treatment and Preventive Interventions Research Branch.