1. University of Tennessee Health Sciences Center; Memphis TN USA
2. Kaiser Permanente Georgia; Atlanta GA USA
3. Kaiser Permanente Northern California; Oakland CA USA
4. Henry Ford Hospital; Detroit MI USA
5. University of Pennsylvania; Philadelphia PA USA
6. Kaiser Permanente Southern California; Pasadena CA USA
7. Marshfield Clinic Research Foundation; Marshfield WI USA
8. Healthcore; Wilmington DE USA
9. Geisinger Health System; Danville PA USA
10. Kaiser Permanente Colorado; Denver CO USA
11. Kaiser Permanente Northwest; Portland OR USA
12. HealthPartners Institute for Education and Research; Minneapolis MN USA
13. Group Health Research Institute; Seattle WA USA
14. Harvard Pilgrim Health Care; Boston MA USA
15. Food and Drug Administration; Silver Spring MD USA