1. VA North Texas Health Care System, Dallas, Texas
2. Department of Rehabilitation Science and Technology, University of Pittsburgh, Pittsburgh, Pennsylvania
3. Department of Psychological Science, Kennesaw State University, Kennesaw, Georgia
4. Department of Psychiatry and Behavioral Sciences, University of Texas Health Science Center at San Antonio, San Antonio, Texas
5. Research and Development Service, South Texas Veterans Health Care System, San Antonio, Texas
6. Department of Psychology, University of Texas at San Antonio, San Antonio, Texas