1. Center for Health Equity Research and Promotion, VA Pittsburgh Healthcare System, Pittsburgh, Pennsylvania, USA.
2. Graduate School of Public Health, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
3. Department of Health Sciences, Lehman College, City University of New York, Bronx, New York, USA.
4. Mountain Home VA Medical Center, Johnson City, Tennessee, USA.
5. Department of Psychiatry and Behavioral Sciences, East Tennessee State University, Johnson City, Tennessee, USA.
6. Lesbian, Gay, Bisexual, and Transgender Health Program, Office of Patient Care Services, Veterans Health Administration, Washington, District of Columbia, USA.
7. National Center for Post-traumatic Stress Disorder, VA Boston Healthcare System, Boston, Massachusetts, USA.
8. Boston University School of Medicine, Boston, Massachusetts, USA.
9. South Central Mental Illness Research, Education and Clinical Center, Michael E. DeBakey VA Medical Center, Houston, Texas, USA.
10. Department of Psychiatry, Baylor College of Medicine, Houston, Texas, USA.
11. Center for Healthcare Organization and Implementation Research, Edith Nourse Rogers VA Medical Center, Bedford, Massachusetts, USA.
12. Department of Health Law, Policy and Management, Boston University School of Public Health, Boston, Massachusetts, USA.
13. Suzanne Dworak-Peck School of Social Work, University of Southern California, Los Angeles, California, USA.