1. The War Related Illness and Injury Study Center, The VA New Jersey Health Care System, 285 Tremont Ave., East Orange, NJ 07019, USA
2. Silberman School of Social Work at Hunter College, The City University of New York, New York, NY 10035, USA
3. VA Providence Health Care System, Providence, RI 02908, USA
4. School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA 70112, USA