1. Department of Psychology and Counseling, The University of Texas at Tyler, Tyler, TX, USA
2. VISN 17 Center of Excellence for Research on Returning War Veterans, Waco, TX, USA
3. Central Texas Veterans Health Care System, Temple, TX, USA
4. Department of Health, Human Performance, and Recreation, Baylor University, Waco, TX, USA
5. Department of Psychiatry and Behavioral Sciences, Texas A&M University, College of Medicine, Temple, TX, USA