1. Department of Psychiatry, Westmead Hospital, Sydney, Australia
2. US Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, White River Junction, Vermont
3. US Department of Veterans Affairs National Center for Posttraumatic Stress Disorder, Veterans Affairs Connecticut Healthcare System, West Haven, Connecticut
4. Department of Psychiatry, Yale School of Medicine, New Haven, Connecticut
5. Department of Social and Behavioral Sciences, Yale School of Public Health, New Haven, Connecticut