1. Anxiety Disorders Research Program, Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, Ohio.
2. Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, North Carolina.
3. Shire, Lexington, Massachusetts.
4. New York State Psychiatric Institute, Columbia University, New York, New York.
5. New York Presbyterian Morgan Stanley Children's Hospital, Columbia University/New York State Psychiatric Institute, New York, New York.