1. Center for the Study of Traumatic StressDepartment of Psychiatry, Uniformed Services University of the Health Sciences Bethesda MD USA
2. Department of Health Care PolicyHarvard Medical School Boston MA USA
3. Department of PsychologyHarvard University Cambridge MA USA
4. Department of Preventive Medicine and BiostatisticsUniformed Services University of the Health Sciences Bethesda MD USA
5. Department of Psychiatry and Department of Family Medicine and Public HealthUniversity of California San Diego La Jolla CA USA
6. VA San Diego Healthcare System La Jolla CA USA