1. Department of Neuroscience, Washington University School of Medicine, St. Louis, Missouri.
2. Department of Psychiatry, Washington University School of Medicine, St. Louis, Missouri.
3. Department of Neurology, Washington University School of Medicine, St. Louis, Missouri.
4. National Institute of Mental Health, Bethesda, Maryland.
5. Department of Radiology, Washington University School of Medicine, St. Louis, Missouri.
6. Department of Psychology, Washington University in St. Louis, St. Louis, Missouri.