Efficacy and Safety of Dex-Methylphenidate Extended Release 30 mg Versus 20 mg in Children (6-12 Years) With Attention-Deficit/Hyperactivity Disorder (ADHD) in a Laboratory Classroom Setting.

Miami Research Associates, South Miami

Florida Clinical Research Center, LLC, Bradenton

Vince and Associates Clinical Research, Overland Park

Clinical Study Center, LLC, Little Rock

Bayou City Research, Houston

Claghorn-Lesem Research Clinic, Houston

Behavioral Neurology, Lubbock

Center for Psychiatry and Behavioral Medicine, Inc., Las Vegas