1. Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799
2. Department of Preventive Medicine and Biometrics, Uniformed Services University of the Health Sciences, Bethesda, MD 20814-4799
3. Division of Behavioral Medicine, Department of Psychiatry, Georgetown University Medical Center, Washington, DC
4. U.S. Marine Corps, Safety Division, Washington, DC