1. Department of Neurology, Drexel University, College of Medicine, Philadelphia, PA, USA
2. Department of Psychology, Temple University, Philadelphia, PA, USA
3. Department of Clinical and Health Psychology, University of Florida, Gainesville, FL, USA
4. Department of Psychiatry, University of California San Diego, School of Medicine, San Diego, CA, USA and The Psychology Service VA San Diego Healthcare System, San Diego, CA, USA
5. Department of Psychiatry, University of Illinois, Chicago, IL, USA
6. Department of Psychology, University of Southern California, Los Angeles, CA, USA
7. Department of Neurology, Boston University and the Framingham Heart Study, Boston, MA, USA
8. Department of Neuroscience, North Dakota Medical School, Fargo, ND, USA