1. Department of Psychiatry and Behavioral Sciences, McGovern Medical School, University of Texas Health Science Center at Houston , Houston, TX 77054, USA
2. Department of Psychological Sciences, University of Missouri, St. Louis , St. Louis, MO 63121, USA
3. Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine , Atlanta, GA 30329, USA
4. Atlanta VA Healthcare System , Atlanta, GA 30329, USA
5. Ralph H. Johnson VA Medical Center , Charleston, SC 29401, USA
6. Department of Psychiatry and Behavioral Sciences, Medical University of South Carolina , Charleston, SC 29425, USA
7. Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine , Houston, TX 77030, USA
8. Michael E. DeBakey VA Medical Center , Houston, TX 77030, USA
9. Florida State University College of Nursing , Tallahassee, FL 32306-4310, USA