1. VA San Diego Center of Excellence for Stress and Mental Health, San Diego, California, USA.
2. Department of Psychiatry, University of California, San Diego, California, USA.
3. VA San Diego Healthcare System, San Diego, California, USA.
4. VA Central Western Massachusetts Healthcare System, Leeds, Massachusetts, USA.
5. University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA.
6. Hahn School of Nursing and Health Sciences/Beyster Institute of Nursing Research, University of San Diego, San Diego, California, USA.
7. Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego, California, USA.