1. Center for the Study of Traumatic Stress, Department of Psychiatry (Mash, Ursano, Naifeh, Fullerton, Aliaga, Riggs-Donovan, Dinh, Vance, Wynn), and Department of Preventive Medicine and Biostatistics (Kao), Uniformed Services University of the Health Sciences, Bethesda, Md.; Henry M. Jackson Foundation for the Advancement of Military Medicine, Bethesda, Md. (Mash, Naifeh, Aliaga, Riggs-Donovan, Dinh, Vance); Department of Health Care Policy, Harvard Medical School, Boston (Kessler, Zaslavsky, Sampson);...