1. Institute for Health Research, Kaiser Permanente Colorado, Denver, CO
2. University of Colorado, Denver, CO
3. Denver VA Medical Center, Denver, CO
4. Duke University Medical Center, Duke Clinical Research Institute, Durham, NC
5. Stanford School of Medicine, Palo Alto, CA
6. Mid America Heart Institute, Kansas City, MO
7. University of Missouri at Kansas City School of Medicine, Kansas City, MO
8. Tennessee Valley Health System VA, Nashville, TN
9. Vanderbilt University Medical Center, Nashville, TN
10. Christiana Care Health System, Wilmington, DE
11. Yale School of Medicine, West Haven, CT