1 National Center for PTSD, Behavioral Science Division, VA Boston Healthcare System, Boston, MA, USA.
2 Department of Psychiatry, Boston University School of Medicine, Boston, MA, USA.
3 Neuroimaging Research for Veterans Center, VA Boston Healthcare System, Boston, MA, USA.
4 Research Service, VA Boston Healthcare System, Boston, MA, USA.
5 Department of Biomedical Genetics, Boston University School of Medicine, Boston, MA, USA.
6 Department of Biostatistics, Boston University School of Public Health, Boston, MA, USA.
7 Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA, USA.
8 Translational Research Center for TBI and Stress Disorders and Geriatric Research, Educational and Clinical Center, VA Boston Healthcare System, Boston, MA, USA.
9 Department of Psychiatry, Harvard Medical School, Boston, MA, USA.
10 Department of Radiology, Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA.
11 Pharmacogenomics Analysis Laboratory, Research Service, Central Arkansas Veterans Healthcare System, Little Rock, AR, USA.
12 Massachusetts Veterans Epidemiology Research and Information Center, VA Boston Healthcare System, Boston, MA, USA.