1. War Related Illness and Injury Study Center, Veterans Affairs, New Jersey Health Care System, East Orange, NJ, USA
2. Department of Educational and Counseling Psychology, University at Albany, Albany, NY, USA
3. Department of Biostatistics and Epidemiology, School of Public Health, Rutgers University, New Brunswick, NJ, USA
4. Psychology Department, Iowa State University, Ames, USA
5. Department of Veterans Affairs, Bedford Memorial Hospital, Bedford, MA, USA
6. Interdisciplinary Affective Science Laboratory, Northeastern University, Boston, USA