1. Central Virginia VA Health Care System, Richmond, VA, USA
2. Virginia Commonwealth University Health System, Richmond, VA, USA
3. Sheltering Arms Institute, Richmond, VA, USA
4. Palo Alto University, Palo Alto, CA, USA
5. Indiana University School of Medicine, Indianapolis, IN, USA
6. Rehabilitation Hospital of Indiana, Indianapolis, IN, USA
7. Baylor College of Medicine, Houston, TX, USA
8. TIRR Memorial Hermann, Houston, TX, USA
9. The Ohio State University, Columbus, OH, USA
10. New York University Langone Health, New York, NY, USA
11. Rusk Rehabilitation Center, New York, NY, USA
12. VA Palo Alto Health Care System, Palo Alto, CA, USA
13. Minneapolis VA Health Care System, Minneapolis, MN, USA
14. University of Minnesota, Minneapolis, MN, USA