1. Psychology Service, Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA
2. Virginia Institute for Psychiatric and Behavioral Genetics, Virginia Commonwealth University, Richmond, VA, USA
3. Department of Psychology, Virginia Commonwealth University, Richmond, VA, USA
4. VA Mid-Atlantic Mental Illness Research, Education and Clinical Center, Durham VA Medical Center, Durham, NC, USA
5. Department of Physical Medicine and Rehabilitation, Virginia Commonwealth University, Richmond, VA, USA