1. Alpert Medical School of Brown University, Providence, Rhode Island, Center for Primary Care and Prevention, Pawtucket, Rhode Island, and Brown University School of Public Health Providence Rhode Island
2. South Nuremberg Hospital Nuremberg Germany
3. Brigham and Women's Hospital and Harvard Medical School Boston Massachusetts
4. Tufts Medical Center Boston Massachusetts
5. Houston Health Services Research and Development Center of Excellence, Michael E. DeBakey VAMC, and Baylor College of Medicine Houston Texas
6. Center for Primary Care and Prevention Pawtucket Rhode Island
7. Diakonhjemmet Hospital Oslo Norway
8. University of California San Francisco
9. University of Maryland School of Medicine Baltimore
10. The Ohio State University Columbus
11. University of Arizona Tucson