1. VA Boston Healthcare System, Boston, MA, 02301, USA
2. Center for Alcohol and Addiction Studies, Brown University School of Public Health, Providence, RI, 02903, USA
3. San Francisco VA Health Care System, San Francisco, CA, 94121, USA
4. Department of Psychiatry and Behavioral Sciences, University of California – San Francisco, San Francisco, CA, 94103, USA
5. Providence VA Medical Center, Providence, RI, 02908, USA