1. Center of Excellence for Stress and Mental Health, VA San Diego Healthcare System, Department of Psychiatry, University of California, San Diego, CA, USA
2. VA San Diego Healthcare System, University of California, San Diego, CA, USA
3. Veterans Medical Research Foundation, Department of Psychiatry, University of California, San Diego, CA, USA
4. Hahn School of Nursing and Health Sciences/Beyster Institute of Nursing Research, University of San Diego, San Diego, CA, USA
5. Center of Excellence for Stress and Mental Health, VA San Diego Healthcare System, Department of Psychiatry and Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego, CA, USA