1. Department of Psychiatry, Helen and Arthur E. Johnson Depression Center, University of Colorado School of Medicine, Aurora, Colorado.
2. Department of Psychiatry, Stanford University School of Medicine, Stanford, California.
3. Department of Psychiatry and Behavioral Neuroscience, University of Cincinnati College of Medicine, Cincinnati, Ohio.
4. Child and Adolescent Mood Disorders Program, UCLA Semel Institute, Los Angeles, California.