1. Department of Psychiatry; University of Texas Health Science Center at San Antonio; San Antonio Texas
2. Research Imaging Institute; University of Texas Health Science Center at San Antonio; San Antonio Texas
3. Maryland Psychiatric Research Center; Department of Psychiatry; University of Maryland School of Medicine; Baltimore Maryland
4. Russell H. Morgan Department of Radiology and Radiological Science; Johns Hopkins University; Baltimore Maryland
5. Oxford Centre for Functional MRI of the Brain; University of Oxford; Oxford United Kingdom
6. Department of Psychiatry; Yale University School of Medicine; New Haven Connecticut
7. Behavioral Sciences Laboratories; Veterans Affairs Medical Center and University of Oklahoma Health Sciences Center; Oklahoma City Oklahoma