1. Department of Mental Health and Clinical Neurosciences, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.
2. Department of Research and Development, Veterans Affairs Portland Health Care System, Portland, Oregon, USA.
3. Department of Psychiatry and Oregon Health & Science University, Portland, Oregon, USA.
4. Department of Behavioral Neuroscience, Oregon Health & Science University, Portland, Oregon, USA.
5. Departments of Research and Development, Atlanta VA Health Care System, Decatur, Georgia, USA.
6. Emory University Nell Hodgson Woodruff School of Nursing, Atlanta, Georgia, USA.
7. University of Central Florida, Orlando, Florida, USA.
8. Primary Care; Veterans Affairs Portland Health Care System, Portland, Oregon, USA.
9. Nursing and Patient Care Services; Atlanta VA Health Care System, Decatur, Georgia, USA.