1. VISN 1 Mental Illness Research, Education, and Clinical Center (MIRECC), VA Bedford Healthcare System, Bedford, Massachusetts, USA
2. Department of Psychiatry, Boston University School of Medicine, Boston, Massachusetts, USA
3. US Department of Veterans Affairs, Tomah VA Medical Center, Tomah, Wisconsin, USA
4. Department of Psychiatry, University of Massachusetts Chan Medical School, Worcester, Massachusetts, USA
5. Center of Excellence for Substance Addiction Treatment & Education, Crescenz Veterans Affairs Medical Center, Philadelphia, Pennsylvania, USA
6. Department of Psychiatry, University of Pennsylvania, Philadelphia, Pennsylvania, USA
7. U.S. Department of Veteran Affairs, Office of Mental Health and Suicide Prevention, Washington, District of Columbia, USA