1. Virginia Institute for Psychiatric and Behavioral Genetics Virginia Commonwealth University Richmond Virginia
2. Department of Psychology Michigan State University East Lansing Michigan
3. Emotion and Development Branch National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services Bethesda Maryland
4. Department of Psychology Virginia Commonwealth University Richmond Virginia
5. Section on Neurobiology of Fear and Anxiety National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services Bethesda Maryland
6. Department of Psychiatry Virginia Commonwealth University Richmond Virginia