1. Boston Environmental Hazards Center, VA Boston Healthcare System, Boston, MA
2. Department of Environmental Health, Boston University School of Public Health, Boston, MA
3. Department of Neurology, Boston University School of Medicine, Boston, MA
4. National Center for PTSD, VA Boston Healthcare System, Boston, MA
5. Psychology Service, VA Boston Healthcare System, Boston, MA
6. Department of Psychiatry, Boston University School of Medicine, Boston, MA
7. Department of Epidemiology and Biostatistics, Boston University School of Public Health, Boston, MA
8. Department of Environmental Medicine, Odense University, Odense, Denmark