1. Agency for Healthcare Research and Quality, US Department of Health and Human Services, Rockville, Maryland
2. Now with Defense Health Agency, Falls Church, Virginia
3. Richard and Susan Smith Center for Outcomes Research in Cardiology, Division of Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts
4. Department of Biostatistics, Harvard T. H. Chan School of Public Health, Boston, Massachusetts
5. Center for Outcomes Research and Evaluation, Yale New Haven Hospital, New Haven, Connecticut
6. Division of Pulmonary and Critical Care Medicine, University of Connecticut School of Medicine, Farmington
7. Centers for Medicare & Medicaid Services, US Department of Health and Human Services, Baltimore, Maryland
8. Office of the National Coordinator for Health Information Technology, US Department of Health and Human Services, Rockville, Maryland
9. Now with Highmark Health, Pittsburgh, Pennsylvania
10. Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut
11. Now with the National Quality Forum, Washington, DC
12. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
13. Department of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut