1. VA Connecticut Healthcare System, West Haven, CT
2. Yale School of Medicine, New Haven, CT
3. The Johns Hopkins School of Medicine, Baltimore, MD
4. VA Central Western Massachusetts Healthcare System, Leeds, MA
5. University of Massachusetts, Amherst, MA
6. VA Minneapolis Healthcare System, Minneapolis, MN
7. University of Minnesota Medical School, Minneapolis, MN
8. Defense Health Headquarters, Falls Church, VA
9. VA Portland Health Care System, Portland, OR
10. VA Eastern Colorado Health Care System, Aurora, CO
11. University of Colorado School of Medicine, Aurora, CO
12. Duke University, Durham, NC
13. University of California, San Diego, CA
14. University of Texas Health Science Center at San Antonio, San Antonio, TX
15. San Francisco VA Health Care System, San Francisco, CA
16. University of California, San Francisco, CA
17. Providence VA Medical Center, Providence, RI
18. Warren Alpert Medical School of Brown University, Providence, RI
19. Brooke Army Medical Center, Fort Sam Houston, TX
20. Uniformed Services, University of Health Sciences, Bethesda, MD
21. Palmer Center for Chiropractic Research, Palmer College of Chiropractic, Davenport, IA
22. Manchester VA Medical Center, Manchester, NH
23. VA Boston Healthcare System, Boston, MA
24. Walter Reed Army Institute of Research, Silver Spring, MD