A Double-Blind, Placebo-Controlled, Randomized Withdrawal Study of the Safety and Efficacy of Memantine in Pediatric Patients with Autism, Asperger�s Disorder, or Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) Previously Treated with M

To evaluate the safety, tolerability, and efficacy of memantine therapy compared with placebo in pediatric patients with autism, Asperger�s Disorder, or Pervasive Developmental Disorder Not Otherwise Specified (PDD-NOS) previously on stable memantine therapy utilizing a randomized withdrawal paradigm.