1. Section of Cardiac Surgery, Yale School of Medicine, New Haven, Connecticut
2. Center for Outcomes Research and Evaluation, Yale-New Haven Hospital, New Haven, Connecticut
3. Division of Cardiac Surgery, Department of Surgery, Massachusetts General Hospital, Harvard Medical School, Boston
4. Center for Quality and Safety, Massachusetts General Hospital, Harvard Medical School, Boston
5. Section of Rheumatology, Department of Medicine, Yale School of Medicine, New Haven, Connecticut
6. Section of Rheumatology, Department of Medicine, Virginia Medical Center, West Haven, Connecticut
7. Section of Cardiovascular Medicine, Department of Internal Medicine, Yale School of Medicine, New Haven, Connecticut
8. Department of Health Policy and Management, Yale School of Public Health, New Haven, Connecticut