1. Department of Psychiatry; Maryland Psychiatric Research Center, University of Maryland School of Medicine; Baltimore Maryland
2. Oxford Centre for Functional Magnetic Resonance Imaging of the Brain, University of Oxford; Oxford United Kingdom
3. Department of Radiology and Radiological Sciences; Johns Hopkins University School of Medicine; Baltimore Maryland
4. Department of Psychology; University of Maryland; Baltimore County Maryland
5. Department of Neurology; University of California; Los Angeles California
6. Department of Physics; University of Maryland; Baltimore County Maryland