1. RTI International, RTP, NC, USA
2. James A. Haley VA Medical Center; University of South Florida, Tampa, FL, USA
3. Michael E. DeBakey VA Medical Center and Baylor College of Medicine, Houston, TX, USA
4. University of Utah, Salt Lake City, UT, USA
5. Hunter Holmes McGuire VA Medical Center, Richmond, VA, USA
6. Walter Reed National Military Medical Center, Bethesda, MD, USA; W. G. “Bill” Hefner VA Medical Center, Salisbury, NC, USA
7. Missouri Institute of Mental Health, University of Missouri-St Louis, MO, USA