1. Meyers Primary Care Institute and Fallon Community Health Plan; Worcester Massachusetts
2. Division of UMass Medical School Geriatric Medicine; University of Massachusetts; Worcester Massachusetts
3. Department of Quantitative Health Sciences; University of Massachusetts; Worcester Massachusetts
4. Division of Research; Kaiser Permanente of Northern California; Oakland California
5. Departments of Epidemiology, Biostatistics, and Medicine; University of California at San Francisco; San Francisco California
6. Department of Health Research and Policy; School of Medicine; Stanford University; Palo Alto California
7. Institute for Health Research; Kaiser Permanente Colorado; Denver Colorado
8. Colorado Cardiovascular Outcomes Research Consortium; Denver Colorado
9. School of Medicine; University of Colorado Aurora; Aurora Colorado
10. Center for Health Research; Kaiser Permanente Northwest; Portland Oregon
11. Division of Cardiovascular Medicine; Medical School; University of Massachusetts; Worcester Massachusetts
12. Division of Cardiology; University of Colorado; Denver Colorado