1. Kaiser Permanente Washington Health Research Institute, Seattle
2. University of Iowa, Iowa City
3. Veterans Affairs Palo Alto Health Care System, Palo Alto, California
4. Stanford University, Stanford, California
5. University of California, San Francisco
6. Oregon Health & Science University, Portland
7. Columbia University, New York, New York
8. University of Pennsylvania, Philadelphia
9. University of Georgia, Athens
10. Virginia Tech Carilion School of Medicine, Roanoke
11. Nationwide Children’s Hospital, Columbus, Ohio
12. Fairfax Family Practice Residency, Fairfax, Virginia
13. Virginia Commonwealth University, Richmond
14. Temple University, Philadelphia, Pennsylvania
15. University of Alabama at Birmingham
16. University of California, Los Angeles
17. Boston University, Boston, Massachusetts
18. Northwestern University, Evanston, Illinois
19. Icahn School of Medicine at Mount Sinai, New York, New York
20. James J. Peters Veterans Affairs Medical Center, Bronx, New York
21. University of Hawaii, Honolulu
22. Pacific Health Research and Education Institute, Honolulu, Hawaii