1. Social, Cognitive, and Affective Neuroscience Laboratory, McLean Hospital; Harvard Medical School; Belmont Massachusetts
2. Department of Psychology; University of Miami; Coral Gables Florida
3. Department of Psychology; University of Massachusetts; Boston Massachusetts
4. Department of Public Health; Yale University; New Haven Connecticut
5. Department of Psychology; Yale University; New Haven Connecticut
6. Center for Anxiety and Traumatic Stress Disorders, Department of Psychiatry, Massachusetts General Hospital; Harvard Medical School; Boston Massachusetts
7. Department of Psychiatry; Rush University Medical Center; Chicago Illinois