1Department of Population Health Sciences, Duke University School of Medicine, 215 Morris St., Suite 210, Durham, NC, 27701, United States, 1 919-681-6801.
2Durham VA Health Care System, Durham, NC, United States.
3VA Palo Alto Health Care System, Dissemination and Training Division, National Center for PTSD, Menlo Park, CA, United States.
4Division of Public Mental Health and Population Sciences, Department of Psychiatry and Behavioral Sciences, Stanford University School of Medicine, Palo Alto, CA, United States.
5University of North Carolina, Chapel Hill, NC, United States.
6United States Department of Veterans Affairs, Washington, DC, United States.
7Department of Biostatistics and Bioinformatics, Duke University School of Medicine, Durham, NC, United States.
8Department of General Internal Medicine, Wake Forest University School of Medicine, Winston Salem, NC, United States.